Species Updates

AL	Accepted lump
AS	Accepted split
ENG	English name change
EXT	Extinct taxon
NEW	Newly described taxon
PHY	Phylogenetic issue
PL	Proposed lump
PS	Proposed split
SEQ	Modification in linear sequence
SSP	Subspecies issue
TAX	Taxonomic or nomenclatural issue

Species Updates IOC Version 15.1 (DRAFT)

English Name	Scientific Name	Change	Code	List After Species	Source
Rubeho Forest Partridge	Xenoperdix obscuratus	DEL	AL		Rubeho Forest Partridge Xenoperdix obscuratus was formerly split from Udzungwa Forest Partridge X. udzungwensis on the basis of morphological differences. But minimal mtDNA divergence and purported heterotaxon playback responses would better support conspecific treatment (Dickinson & Remsen 2013; del Hoyo & Collar 2014; HBW/BirdLife; Stevenso & Fanshawe; WGAC 117).
Siamese Partridge	Arborophila diversa	DEL	AL		Siamese Partridge Arborophila diversa was formerly split from Chestnut-headed Partridge Arborophila cambodiana. But recognition of the intermediate ssp. chandamonyi indicates clinality and treatment as a single species (Eames et al. 2002; del Hoyo & Collar 2014; HBW/BirdLife; WGAC 118).
Velasquez's Woodpecker	Melanerpes santacruzi	DEL	AL		Velasquez's Woodpecker Melanerpes santacruzi (including all ssp. except for nominate aurifrons) was previously split from Golden-fronted Woodpecker based on mtDNA divergence (García-Trejo et al. 2009). Velasquez's Woodpecker is re-lumped with Golden-fronted Woodpecker on the basis of more recent genomic and ecological analyses (Llanos-Quevedo et al. 2022; NACC 2023-C-5).
Red-throated Parakeet	Aratinga rubritorquis	DEL	AL		Red-throated Parakeet Aratinga rubritorquis was formerly split from A. holochlorus (Forshaw 2010; Martínez Gómez et al. 2017; HBW/BirdLife). Re-lump with Green Parakeet Psittacara holochlorus based on shallow mtDNA and UCE divergence, inconsistency of the presence, size, and shape of the red throat patch, apparent hybridization including mixed pairs, and absence of distinct vocal differences (Smith et al. 2022; NACC 2023-A-14).
Double-collared Crescentchest	Melanopareia bitorquata	DEL	AL		Double-collared Crescentchest Melanopareia bitorquata was formerly split from Collared Crescentchest M. torquata (Lopes & Gonzaga 2016). Re-lump Melanopareia bitorquata with Collared Crescentchest based on similar vocalizations and only minor differences in plumage (del Hoyo & Collar 2016; HBW/BirdLife; WGAC 541).
Northern Mouse-colored Tyrannulet	Nesotriccus incomtus	DEL	AL		Re-lump prematurely split Nesotriccus incomtus with Nesotriccus murinus (SACC 956). Restore English name of Mouse-colored Tyrannulet Nesotriccus murinus from Southern Mouse-colored Tyrannulet with the re-lumping of Northern Mouse-colored Tyrannulet N. incomtus.
Samoan Myzomela	Myzomela nigriventris	ADD	AS	Cardinal Myzomela	Samoan Myzomela M. nigriventris is split from Cardinal Myzomela M. cardinalis based on significant vocal differences and marked differences in female plumage (Pratt & Mittermeier 2016; WGAC 974).
New Guinea Friarbird, Hornbill Friarbird	Philemon novaeguineae, Philemon yorki	DEL	AL		Lump New Guinea Friarbird Philemon novaeguineae and Hornbill Friarbird P. yorki with Helmeted Friarbird P. buceroides following Schedde & Mason (1999) and other major world bird lists, pending a much-needed re-analysis of the entire Helmeted Friarbird complex in face of vocal differences and fairly deep genetic divergence (Jønsson et al. 2016; Peñalba et al. 2019; Gregory 2017; Eaton et al. 2021).
Reichenow's Batis	Batis reichenowi	DEL	AL		Reichenow's Batis Batis reichenowi was formerly split from B. mixta (Louette 2006). But it is nested within B. mixta in the mtDNA molecular phylogeny of Fjeldså et al. (2006), despite described morphological differences in female plumage. Treat as a subspecies of B. mixta pending vocal or additional genomic evidence to the contrary (WGAC 510).
Providencia Vireo	Vireo approximans	DEL	AL		Providencia Vireo Vireo approximans is lumped with Mangrove Vireo Vireo pallens based on morphology and vocalizations. Erroneously assigned to Vireo crassirostris by the AOU for years until corrected in 2019 (NACC 2019-C-11; del Hoyo & Collar 2016; HBW/BirdLife).
Annobon Paradise Flycatcher	Terpsiphone smithii	DEL	AL		Annobon Paradise Flycatcher Terpsiphone smithii is lumped with Red-bellied Paradise Flycatcher Terpsiphone rufiventer (15.1). T. smithii is embedded in T. rufiventer in the mtDNA phylogenies of Fabre et al. (2012) and Andersen et al. (2015). Further, the Red-bellied Paradise Flycatcher complex contains other subspecies at least as phenotypically distinct from the nominate subspecies. See also Borrow & Demey (2001) and del Hoyo & Collar (2016)
Cinnamon-breasted Tit	Melaniparus pallidiventris	DEL	AL		Cinnamon-breasted Tit Melaniparus pallidiventris (including stenotopicus) is lumped with Rufous-bellied Tit (M. rufiventris) based on shallow mtDNA divergence (Johansson et al. 2013), intergradation where the two forms meet, clinal saturation of belly color, and inconsistency in iris color, once felt to be the most reliable differentiating morphological feature (Anderson 2015). See also Dickinson & Christidis (2014).
Agulhas Long-billed Lark	Certhilauda brevirostrisis	DEL	AL		Agulhas Long-billed Lark Certhilauda brevirostrisis lumped with Cape Long-billed Lark C. curvirostris based on shallow genetic divergence, clinal morphological differences, and essentially identical vocalizations (Alström et al. 2013; del Hoyo & Collar 2016; HBW/BLI; Clements 2022).
Athi Short-toed Lark	Alaudala athensis	DEL	AL		Athi Short-toed Lark Alaudala athensis is lumped with Somali Short-toed Lark Alaudala somalica based on the lack of data in support of a split and following virtually all other relevant authorities (e.g. Zimmerman et al. 1996; del Hoyo & Collar 2016; WGAC 219)
Placid Greenbul	Phyllastrephus placidus	DEL	AL		Placid Greenbul Phyllastrephus placidus is lumped with Cabanis's Greenbul Phyllastrephus cabanisi based on the lack of significant vocal, behavioral, ecological or molecular differences (Zimmerman et al. 1996; Johansson et al. 2007; del Hoyo & Collar 2016; Stevenson & Fanshawe 2020; WGAC 1016).
Black-faced Prinia	Priniia melanops	DEL	AL		Black-faced Prinia Prinia melanops (including obscura) is lumped with Banded Prinia Prinia bairdii based on similarities in plumage and hybridization between bairdii and obscura (Zimmerman et al. 1996; del Hoyo & Collar 2016; Stevenson & Fanshawe 2020; WGAC 485).
Rubeho Warbler	Scepomycter rubehoensis	DEL	AL		Rubeho Warbler Scepomycter rubehoensis is lumped with Winifred's Warbler S. winifredae due to minimal morphological differences, borderline genetic differentiation and similar vocalizations (del Hoyo & Collar 2016; Stevenson & Fanshawe 2020; WGAC 477).
Miombo Blue-eared Starling	Lamprotornis elisabeth	DEL	AL		Miombo Blue-eared Starling Lamprotornis elisabeth is lumped with Lesser Blue-eared Starling L. chloropterus based on identical adult plumage, identical contact calls, and continuous distribution of the species through woodlands west of Lake Victoria (Zimmerman et al. 1996; Feare & Craig 1999; Dowsett-Lemaire & Dowsett 2014; WGAC 141).
Amaui	Myadestes woahensis	ADD	AS. EX	Kamao	Extinct Amaui Myadestes woahensis is split from Olomao Myadestes lanaiensis (Pyle & Pyle 2017; NACC 1985; WGAC 64).
Bougainville Thrush	Zoothera atrigena	ADD	AS	New Britain Thrush	Bougainville Thrush Zoothera atrigena is split from allopatric New Britain (Black-backed) Thrush Zoothera talaseae based on distinctive morphology (Dutson 2011; del Hoyo & Collar 2015; HBW/BirdLife).
Yellow-breasted Forest Robin	Stiphrornis xanthogaster	ADD	AS	Orange-breasted Forest Robin	Yellow-breasted Forest Robin Stiphrornis xanthogaster (including sanghensis and rudderi) is split from the forest robin complex Stiphrornis erythrothorax s.l. based on morphological differences following HBW/BirdLife; del Hoyo & Collar (2016).
Olive-backed Forest Robin	Stiphrornis pyrrholaemus	ADD	AS	Yellow-breasted Forest Robin	Olive-backed Forest Robin Stiphrornis pyrrholaemus is split from the forest robin complex Stiphrornis erythrothorax s.l. based on morphological differences following HBW/BirdLife; del Hoyo & Collar (2016).
White-crowned Cliff	Thamnolaea coronata	DEL	AL		White-crowned Cliff Chat Thamnolaea coronata (including kordofanensisis) is lumped with Mocking Cliff Chat T. cinnamomeiventris following most recent authorities until the taxonomy is better resolved. White-crowned and black-crowned males are syntopic in several localities suggesting polymorphism rather than distinct species status (Borrow & Demey 2001; Dickinson & Christidis 2014; Clement & Rose 2015; del Hoyo & Collar 2016; HBW/BirdLife).
Hofmann's Sunbird	Cinnyris hofmanni	DEL	AL		Hofmann's Sunbird Cinnyris hofmanni is relumped with Shelley's Sunbird C. shelleyi from which it was formerly split based on Irwin (2005). But morphological differences are relatively small and are more consistent with subspecies distinction (del Hoyo & Collar 2016; HBW/BirdLIfe; Stevenson & Fanshawe 2020; WGAC 1007).
Tboli Sunbird	Aethopyga tibolii	ADD	AS	Apo Sunbird	Tboli Sunbird Aethopyga tibolii is split from Apo Sunbird Aethopyga boltoni based on differences in plumage and vocalizations supported by mtDNa divergence (Hosner et al. 2013; Allen 2020; WGAC 862).
African Crimson-winged Finch	Rhodopechys alienus	DEL	AL		Re-lump African Crimson-winged Finch Rhodopechys alienus with Asian Crimson-winged Finch Rhodopechys sanguineus. Insufficient vocal and genetic data available to support the original split despite modest morphological differences and widely allopatric ranges (Dickinson & Christidis 2014; WGAC 1103. Contra Shirihai & Svensson 2018).

Species Updates IOC Version 14.2

English Name	Scientific Name	Change	Code	List After Species	Source
Red Grouse	Lagopus scotica	ADD	AS	White-tailed Ptarmigan	Red Grouse Lagopus scotica is split from Willow Ptarmigan based on genomic evidence and differences in plumage (Kozma et al. 2019; Sangster et al. 2022).
Timor Nightjar	Caprimulgus ritae	ADD	NEW	Mees's Nightjar	Timor Nightjar Caprimulgus ritae is a newly described species within the C. macrurus complex that differs from its closest relatives in genetics, morphology, and vocalizations (King, BF et al. 2024).
Karimui Owlet-nightjar	Aegotheles terborghi	ADD	AS	Vogelkop Owlet-nightjar	Karimui Owlet-nightjar Aegotheles terborghi was previously treated as a subspecies of A. bennettii to which it was provisionally assigned based on morphological similarities (Beehler & Pratt 2016). However, mtDNA analysis places it sister to A. affinis rather than within the A. bennettii clade (Dumbacher et al.. 2003). Further, A. terborghi is a montane from unlike other taxa within A. bennettii. Treat as a distinct species. Long known only from the type specimen but recently rediscovered (Lagerqvist et al. 2017).
Sulawesi Swiftlet	Aerodramus sororum	DEL	AL		Aerodramus sororum is re-lumped with A. infuscatus (Dickinson & Remsen 2013; del Hoyo & Collar 2014; HBW/BirdLife). The original split was premature, and the three forms show only shallow genetic divergence (WGAC 948).
Seram Swiftlet	Aerodramus ceramensis	DEL	AL		Aerodramus ceramensis is re-lumped with A. infuscatus (Dickinson & Remsen 2013; del Hoyo & Collar 2014; HBW/BirdLife). The original split was premature, and the three forms show only shallow genetic divergence (WGAC 948).
Germain's Swiftlet	Aerodramus germani	DEL	AL		Germain's Swiftlet Aerodramus germani (including amechanus) is lumped with Edible-nest Swiftlet A. fuciphagus. Plumage characteristics traditionally used to separate these two "species" are clinal and misleading (Dickinson & Remsen 2013; del Hoyo & Collar 2014; HBW/BLI. See Cranbrook et al. 2013).
Olive-capped Coua	Coua olivaceiceps	ADD	AS	Red-capped Coua	Olive-cappped Coua Coua olivaceiceps is split from Red-capped Coua C. ruficeps based on differences in plumage and vocalizations (del Hoyo & Collar 2014; HBW/BirdLife; Dowsett-Lemaire 2004).
Mentawai Malkoha	Phaenicophaeus oeneicaudus	ADD	AS	Chestnut-breasted Malkoha	Mentawai Malkoha Phaenicophaeus oeneicaudus is split from Chestnut-breasted Malkoha P. curvirostris based on morphological differences (del Hoyo & Collar 2014; HBW/BirdLife; Eaton et al. 2021).
Sulawesi Brush Cuckoo	Cacomantis virescens	ADD	AS	Sunda Brush Cuckoo	Sulawesi Brush Cuckoo Cacomantis virescens is split from Cacomantis sepulcralis based on morphology and vocalizations (R.B. Payne, ms; Wu et al. 2022)
Manus Brush Cuckoo	Cacomantis blandus	ADD	AS	Australian Brush Cuckoo	Manus Brush Cuckoo Cacomantis blandus is split from (Australian) Bruch Cuckoo C. variolosus based on vocalizations and morphology (Wu et al. 2022).
Solomons Brush Cuckoo	Cacomantis addendus	ADD	AS	Manus Brush Cuckoo	Solomons Brush Cuckoo Cacomantis addendus is split from (Australian) Brush Cuckoo C. variolosus based on vocalizations and morphology (Wu et al. 2022).
Pied Bronze Cuckoo	Chalcites crassirostris	ADD	AS	Little Bronze Cuckoo	Pied Bronze Cuckoo Chalcites crassirostris is split from Little Bronze Cuckoo C. minutillus based on distinctive plumage and vocalizations (Eaton et al. 2021; WGAC 1038).
Marquesan Swamphen	Porphyrio paepae	ADD	NEW	White Swamphen	Extinct. Known from reports perhaps as late as 1937. Confirmed from subfossil remains and featured in a contemporary painting by Gaugin (1902) Le Sorcier d'Hiva Oa ou le Marquisien à la cape rouge (Hume, 2017).
Mongolian Gull	Larus mongolicus	ADD	AS	Vega Gull	Mongolian Gull Larus mongolicus is split from Vega Gull L. vegae with which it was previously placed. It is morphologically distinct from that species; it differs ecologically, and its vocalizations also appear to be the most distinctive of the species in the "Herring Gull" complex (WGAC 1136).
Cocos Booby	Sula brewsteri	ADD	AS	Brown Booby	Cocos Booby Sula brewsteri is split from Brown Booby Sula leucogaster based on differences in plumage and assortive mating where they co-occur (Thibault & Cibois 2017; VanderWerf 2023; Chesser et al. 2024)
Western Yellow-billed Barbet	Trachyphonus goffinii	ADD	AS	Sooty Barbet	Western Yellow-billed Barbet Trachyphonus goffinii (including togoensis) is split from (Eastern) Yellow-billed Barbet Trachyphonus purpuratus (including elgonensis) based on differences in morphology and deep mtDNA divergence (Moyle 2004; del Hoyo & Collar 2014; HBW/BirdLife).
Northern Red-fronted Tinkerbird	Pogoniulus uropygialis	ADD	AS	Yellow-rumped Tinkerbird	Northern Red-fronted Tinkerbird Pogoniulus uropygialis (including affinis) is split from Southern Red-fronted Tinkerbird P. pusillus based on whole genome data, significant divergence in mtDNA, and phenotypic differences (Kirschel et al. 2021).
Guatemalan Flicker	Colaptes mexicanoides	ADD	AS	Northern Flicker	Guatemalan Flicker Colaptes mexicanoides is split from Northern Flicker C. auratus based on genetic, phenotypic and apparent vocal divergence (del Hoyo & Collar 2014; Manthey et al. 2017; HBW/BirdLife; Chesser et al. 2024).
Macquarie Parakeet	Cyanoramphus erythrotis	DEL	AL		Extinct Macquarie Parakeet Cyanoramphus erythrotis is lumped with Cyanoramphus novaezelandiae based on similar morphology and no compelling evidence that supports a split (OSNZ 2020; BirdLife; Schodde pers. comm., WGAC 646).
Northern Plain Xenops	Xenops mexicanus	ADD	AS	Slender-billed Xenops	Northern Plain Xenops Xenops mexicanus (including ridgwayi, littoralis, olivaceus, and neglectus) is split from Amazonian (Plain) Xenops Xenops genibarbis based on differences in plumage, vocalizations, and nuDNA genomics (Harvey & Brumfield 2015; Arbeláez-Cortés 2020; SACC 996, SACC 1022a),
White-tailed Tityra	Tityra leucura	ADD	NEW	Masked Tityra	The taxonomic status of White-tailed Tityra T. leucura has been uncertain (Whittaker 2008; SACC 634). The unique type specimen, a subadult, had sometimes been regarded as a possible variant of Tityra inquisitor. But there is increasing evidence that it is a valid species based on a field observation in 2006 (Whittaker 2008) and photographs of an adult in the forest canopy that were published on-line (Agami Nature Tours 2023). Generic assignment may need revision. Treatment as a valid species aligns with Dickinson & Christidis (2014); del Hoyo & Collar (2016) and HBW/BirdLife.
Sandhill Grasswren	Amytornis oweni	ADD	AS	Pilbara Grasswren	Sandhill Grasswren Amytornis oweni (including aenigma) is split from Rufous (Pilbara) Grasswren A. whitei based on differences in morphology and ecology (Christidis et al. 2013; WGAC 988)
Mindoro Cuckooshrike	Coracina mindorensis	ADD	AS	Bar-bellied Cuckooshrike	Mindoro Cuckooshrike Coracina mindorensis is split from Bar-bellied Cuckooshrike C. striata based on striking differences in vocalizations and plumage.
Visayan Cuckooshrike	Coracina panayensis	ADD	AS	Mindoro Cuckooshrike	Visayan Cuckooshrike Coracina panayensis is split from Bar-bellied Cuckooshrike C. striata based on differences in morphology and vocalizations (del Hoyo & Collar 2016; Allen 2020; HBW/BirdLife).
Sulu Cuckooshrike	Coracina guillemardi	ADD	AS	Visayan Cuckooshrike	Sulu Cuckooshrike Coracina guillemardi is split from Bar-bellied Cuckooshrike C. striata based on differences in morphology and vocalizations supported by limited mtDNA analysis (Jønsson et al. 2008, 2010),
Mindanao Cuckooshrike	Coracina kochii	ADD	AS	Sulu Cuckooshrike	Mindanao Cuckooshrike Coracina kochii (including boholensis) is split from Bar-bellied Cuckooshrike C. striata based on differences in vocalizations supported by morphological differences and moderate mtDNA divergence (Jønsson et al. 2008, 2010).
Javan Cuckooshrike	Coracina javensis	DEL	AL		Javan Cuckooshrike Coracina javensis is merged with five subspecies taxa formerly included in C. macei in a reconfigured concept of C. javensis based on similar morphology and vocalizations. Change English name of revised Coracina javensis from Javan Cuckooshrike to Oriental Cuckooshrike with the revision of the C. macei/C. javensis complex (WGAC 1088).
Malayan Cuckooshrike	Coracina larutensis	ADD	AS	Large Cuckooshrike	Malayan Cuckooshrike is split from Large Cuckooshrike based on differences in morphology and vocalizations (WGAC 1088).
Malaita Cicadabird	Edolisoma tricolor	ADD	AS	Black-bellied Cicadabird (Solomons Cuckooshrike)	Monotypic Malaita Cicadabird Edolisoma tricolor is split from E. holopolium (with pygmaeum) based on molecular phylogeny, plumage, and vocalizations (Pedersen et al. 2018; WGAC 1085).
Sangihe Cicadabird	Edolisoma salvadorii	ADD	AS	Sulawesi Cicadabird	Sangihe Cicadabird Edolisoma salvadorii (including talautense) is split from Sulawesi Cicadabird Edolisoma morio based on differences in female plumage and molecular divergence (Pedersen et al. 2018; Eaton et al. 2021; WGAC 1072).
Central Melanesian Cicadabird	Edolisoma erythropygium	ADD	AS	Bismarck (Grey-capped) Cicadabird	Central Melanesian Cicadabird Edolisoma erythropygium (including ssp. ultimum, saturatius and nisorium) is a species concept stemming from the taxonomic revision of the Australasian cicadabirds based on the integration of genomic and mtDNA data with assessments of plumage and vocalizations (Pedersen et al. 2018; McCullough et al. 2022; WGAC 1072). It includes ultimum, saturatius, nisorium, and erythropygium that were formerly included in E. remotum.
Rossel Cicadabird	Edolisoma rostratum	ADD	AS	Sahul (Common) Cicadabird	Rossel Cicadabird Edolisoma rostratum is split from Common Cicadabird E. tenuirostre based on the integration of genomic and mtDNA data with assessments of plumage and vocalizations (Pedersen et al. 2018; Eaton et al. 2021; McCullough et al. 2022; WGAC 1072).
Geelvink Cicadabird	Edolisoma meyerii	ADD	AS	Rossel Cicadabird	Geelvink Cicadabird Edolisoma meyerii (including numforanum) is split from Common Cicadabird E. tenuirostre based on morphology supported by molecular genetics (WGAC 1072; Pedersen et al. 2018; HBW/BLI; Gregory 2017).
Banggai Cicdabird	Edolisoma pelingi	ADD	AS	Geelvink Cicadabird	Banggai Cicadabird Edolisoma pelingi is split from Common Cicadabird E. tenuirostre based on morphology supported by molecular genetics (WGAC 1072; Pedersen et al. 2018).
Obi Cicadabird	Edolisoma obiense	ADD	AS	Banggai Cicadabird	Obi Cicadabird Edolisoma obiense is split from Common Cicadabird E. tenuirostre based on morphology supported by molecular genetics (WGAC 1072; Pedersen et al. 2018; HBW/BLI).
North Moluccan Cicadabird	Edolisoma grayi	ADD	AS	Obi Cicadabird	North Moluccan Cicadabird Edolisoma grayi (including pererratum) is split from Common Cicadabird E. tenuirostre based on the integration of genomic and mtDNA data with assessments of plumage and vocalizations (Pedersen et al. 2018; Eaton et al. 2021; McCullough et al. 2022; WGAC 1072).
South Moluccan Cicadabird	Edolisoma amboinense	ADD	AS	North Moluccan Cicadabird	South Moluccan Cicadabird Edolisoma amboinense is split from Common Cicadabird E, tenuirostre based on differences in plumage and vocalizations (WGAC 1072).
Timor Cicadabird	Edolisoma timoriense	ADD	AS	South Moluccan Cicadabird	Timor Cicadabird Edolisoma timoriense (including kalaotuae and emancipatum) is split from Common Cicadabird E. tenuirostre based on morphology supported by molecular genetics (WGAC 1072; Pedersen et al. 2018).
Selayar Whistler	Pachycephala teysmanni	ADD	AS	Rusty-breasted Whistler	Selayar Whistler Pachycephala teysmanni is spit from Rusty-breasted Whistler Pachycephala fulvotincta on the basis of its sexually monomorphic plumage (Eaton et al. 2021; HBW/BirdLife).
Yellow-throated Fiji Whistler	Pachycephala graeffii	ADD	AS	White-throated Fiji Whistler	Yellow-throated Fiji Whistler Pachycephala graeffii (including bella, koroana, torquata, aurantiiventris, ambigua and optata) is split from White-throated Fiji Whister P. vitiensis based on differences in plumage and vocalizations (WGAC 1207).
Nendo Whistler	Pachycephala ornata	ADD	AS	Yellow-throated Fiji Whistler	Nendo Whistler Pachycephala ornata is split from Pachycephala vanikorensis on the basis mtDNA analysis (Jønsson et al. 2014) and differences in plumage.
Utupua Whistler	Pachycephala utupuae	ADD	AS	Nendo Whistler	Utupua Whistler Pachycephala utupuae is split from Pachycephala vanikorensis on the basis of striking differences in female plumage.
Babar Whistler	Pachycephala sharpei	ADD	AS, SEQ	White-bellied Whistler	Babar Whistler Pachycephala sharpei is split from Yellow-throated Whistler P. macrorhyncha based on deep mtDNA divergence, morphology, and distinct female plumage (Jønsson et al. 2014; Eaton et al. 2021). Resequence.
Japanese Tit	Parus minor	DEL	AL		Parus cinereus and Parus minor were previously split from P. major as two species: Cinereous Tit and Japanese Tit (Päckert et al. 2005; Eck & Martens 2006; Collar 2007; Zhao et al. 2012). But the genetic analyses by Päckert & Martens (2008), Zhao et al (2012) and Song et al. (2020) suggest that the Parus major complex may be better interpreted as comprising two species: East Asian P. cinereus (cinereus + minor) which forms a sister clade to Palearctic P. major (major + bokharensis). See WGAC #1100. "Cinereous Tit" is tentatively assigned as the English name for the lumped species.
Foxy Lark	Calendulauda alopex	DEL	AL		Foxy Lark Calendulauda alopex (including intercedens) is lumped with Fawn-colored Lark C. africanoides based on shallow genetic divergence (Alström et al. 2013) and only slight differences in morphology (Ryan 2022; Clements 2022; HBW/BirdLife).
Barlow's Lark	Calendulauda barlowi	DEL	AL		Barlow's Lark Calendulauda barlowi (including patae and cavei) is lumped with Dune Lark C. erythrochlamys on the basis of very shallow genetic divergence and essentially identical vocalizations and size (Alström et al. 2013; del Hoyo & Collar 2016; Ryan & Kirwan 2022; HBW/BirdLife).
Kidepo Lark	Corypha kidepoensis	ADD	AS	Eastern Clapper Lark	Kidepo Lark Corypha kidepoensis (including kathangorensis) is split from Red-winged Lark Corypha (Mirafra) hypermetra based on a comprehensive integrated analysis including plumage, morphometrics, vocalizations, display and phylogenetics (Alström et al. 2024).
Highland Lark	Corypha kurrae	ADD	AS	Red-winged Lark	Highland Lark Corypha kurrae (including henrici, batesi, stresemanni, and bamendae) is split from Rufous-naped Lark Corrypha (Mirafra) africana based on a comprehensive integrated analysis including plumage, morphometrics, vocalizations, display and phylogenetics (Alström et al. 2024).
Sentinel Lark	Corypha athi	ADD	AS	Rufous-naped Lark	Sentinel Lark Corypha athi (including harterti) is split from Rufous-naped Lark Corypha (Mirafra) africana based on a comprehensive integrated analysis including plumage, morphometrics, vocalizations, display and phylogenetics (Alström et al. 2024).
Plains Lark	Corypha kabalii	ADD	AS	Sentinel Lark	Plains Lark Corypha kabalii (including malbranti and irwini) is split from Rufous-naped Lark C. africana based on a comprehensive integrated analysis including plumage, morphometrics, vocalizations, display and phylogenetics (Alström et al. 2024).
Plateau Lark	Corypha nigrescens	ADD	AS	Plains Lark	Plateau Lark Corypha nigrescens (including nyikae) is split from Rufous-naped Lark Corypha (Mirafra) africana based on a comprehensive integrated analysis including plumage, morphometrics, vocalizations, display and phylogenetics (Alström et al. 2024).
Ash's Lark	Corypha (Mirafra) ashi	DEL	AL	Somali Lark	Ash's Lark Corypha (Mirafra) ashi is lumped with Somali Lark Corypha somalica based on molecular and behavioral evidence, and shared type locality.
Pale-throated Greenbul	Atimastillas flavigula	ADD	AS	Yellow-gorgeted Greenbul (Yellow-throated Leaflove)	Pale-throated Greenbul Atimastillas flavigula (including soror) is split from Yellow-gorgeted Greenbul (Yellow-throated Leaflove) A. flavicollis based on differences in morphology and vocalizations (del Hoyo & Collar 2016; HBW/BirdLife).
Olive-headed Greenbul	Arizelocichla olivaceiceps	DEL	AL		Olive-headed Greenbul Arizelocichla olivaceiceps is lumped with Stripe-faced Greenbul Arizelocichla striifacies based on the absence of consistent morphological differences and similarity of vocalizatons (del Hoyo & Collar 2016; HBW/BirdLife). English name of combined species is Olive-headed Greenbul.
Angola Greenbul	Phyllastrephus viridiceps	ADD	AS	White-throated Greenbul	Angola Greenbul Phyllastrephus viridiceps is split from White-throated Greenbul P. albigularis based on differences in vocalizations and morphology (del Hoyo & Collar 2016; HBW/BirdLife).
Malaita Monarch	Symposiachrus malaitae	ADD	AS	Solomons Monarch	Malaita Monarch Symposiachrus malaitae is split from Solomons Monarch S. barbatus based on differences in plumage supported by phylogenetic analysis (Andersen et al. 2015; del Hoyo & Collar 2016; HBW/BirdLife).
Vella Lavella Monarch	Symposiachrus nigrotectus	ADD	AS	White-collared Monarch	Vella Lavella Monarch Symposiachrus nigrotectus (including ganongae) is split from Kolombangara Monarch S. browni based on differences in plumage supported by phylogenetic analysis (Andersen et al. 2015; see del Hoyo & Collar 2016).
Bougainville Monarch	Monarcha erythrostictus	DEL	AL		Bougainville Monarch Monarcha erythrostictus is tentatively lumped with Chestnut-bellied Monarch M. castaneiventris (WGAC 1054). Despite its distinctive morphology, phylogenetic analysis reveals that it falls within the same clade as samples of M. castaneiventris from neighboring Choiseul (Uy et al 2008). Treatment as a subspecies of M. castaneiventris aligns with HBW/BirdLife. See del Hoyo & Collar (2016);
Dyaul Flycatcher	Myiagra cervinicolor	DEL	AL		Dyaul Flycatcher Myiagra cervinicolor was formerly split from M. hebetior based on morphometrics, strikingly different female plumage, and vocalizations (Gregory 2017; HBW/BirdLife). However, upon reconsideration, M. cervinicolor is subsequently lumped with Myiagra eichhorni (14.2). Evidence for species status for cervinicolor (as distnct from M. eichhorni) is not deemed strong enough (WGAC 1050).
Southern Nutcracker	Nucifraga hemispila	ADD	AS	Northern Nutcracker	Southern Nutcracker Nucifraga hemispila (including macella, interdicta and owstoni) is split from Northern (Spotted) Nutcracker on the basis of morphology and vocalizations supported by phylogenetic analysis (del Hoyo & Collar 2016; de Raad et al. 2022; HBW/BirdLife).
Sulawesi Crow	Corvus celebensis	ADD	AS	Slender-billed Crow	Sulawesi Crow Corvus celebensis (including mangoli) is split from C. enca based on deep mtDNA divergence and voice (Eaton et al. 2021).
Sierra Madre Crow	Corvus sierramadrensis	ADD	AS	Samar Crow	Sierra Madre Crow Corvus sierramadrensis is split from Corvus samarensis based on vocal and morphological differences (Allen 2020).
Philippine Jungle Crow	Corvus philippinus	ADD	AS	Indian Jungle Crow	Genetically and vocally distinct Philippine Jungle Crow C. philippinus is split from Large-billed Crow C. macrorhynchos (Allen 2020; Eaton et al. 2021).
Red-throated Rock Martin	Ptyonoprogne rufigula	ADD	AS	Pale Crag Martin	Red-throated Rock Martin Ptyonoprogne rufigula (including bansoensis) is split from (Large) Rock Martin P. fuligula based on morphology supported by phylogenomic analysis (Brown 2019; del Hoyo & Collar 2016; HBW/BLI).
Pacific Swallow	Hirundo javanica	ADD	AS	Hill Swallow	Pacific Swallow H. javanica and Tahiti Swallow H. tahitica are split based on differences in morphology (del Hoyo & Collar 2016; HBW/BirdLife).
European Red-rumped Swallow	Cecropis rufula	ADD	AS	Greater Striped Swallow	Monotypic European Red-rumped Swallow Cecropis rufula is split from (Eastern) Red-rumped Swallow Cecropis daurica based on differences in morphology and molecular divergence (Sheldon et al. 2005; Brown 2019; Eaton et al. 2016, 2021; HBW/BLI; WGAC 1043).
Striated Swallow	Cecropis striolata	DEL	AL		Striated Swallow Cecropis striolata (including ssp mayri, stanfordi, vernayi and striolata) is lumped with (Eastern) Red-rumped Swallow Cecropis daurica. Morphological variation in the strength of the underparts streaking, the primary feature that presumably separates the two "species", is generally clinal from north to south and ssp. japonica and ssp. mayri are virtually identical (Eaton et al. 2016, 2021; HBW/BLI, WGAC 1043).
African Red-rumped Swallow	Cecropis melanocrissus	ADD	AS	Eastern Red-rumped Swallow	African Red-rumped Swallow Cecropis melanocrissus (including kumboensi, emini and domicella) is split from other taxa in the Red-rumped Swallow complex based on morphology and supported by limited molecular phylogeny (Sheldon et al. 2005; Brown 2019; Eaton et al. 2016, 2021; WGAC 1043).
West African Swallow	Cecropis domicella	DEL	AL		West African Swallow Cecropis domicella is lumped with African Red-rumped Swallow Cecropis melanocrissus following HBW/BLI and WGAC 1043). Morphological differences are relatively minor and the only available molecular studies (Sheldon et al. 2005; Brown 2019) are non-contributary since they only examine domicella or emini, but not both.
Rock-loving Cisticola	Cisticola emini	DEL	AL		Rock-loving Cisticola Cisticola emini (including petrophilus and admiralis), originally recognized by Sibley & Monroe (1970), is lumped with Lazy Cisticola Cisticola aberrans. These allopatric taxa vary only slightly in morphology, but they are similar in vocalizations and ecology (Dowsett & Dowsett-Lemaire 1993). The two forms are usually treated as conspecific (Dickinson & Christidis 2014; del Hoyo & Collar 2016; HBW/BirdLife).
Huambo Cisticola	Cisticola bailunduensis	ADD	AD	Lazy Cisticola	Huambo Cisticola Cisticola bailunduensis is split from Lazy Cisticola (formerly Rock-loving Cisticola) based on significantly different vocalizations coupled with morphological and ecological differences (del Hoyo & Collar 2016; HBW/BirdLife).
Maasai Apalis	Apalis stronachi	ADD	AS	Karamoja Apalis	Maasai Apalis Apalis stronachi is split from Karamoja Apalis A. karamojae based on substantial vocal differences and minor differences in morphology (Boesman & Collar 2023).
Salvadori's Eremomela	Eremomela salvadorii	DEL	AL		Salvadori's Eremomela Eremomela salvadorii is lumped with Yellow-bellied Eremomela E. icteropygialis. Vocalizations are similar, and there are only minor differences in plumage which overlap with those of E. i. polioxantha (Dowsett & Dowsett-Lemaire 1993; Dickinson & Christidis 2014; del Hoyo & Collar 2016; HBW/BirdLife).
Kafa White-eye	Zosterops kaffensis	ADD	AS	Heuglin's White-eye	Kafa White-eye Zosterops kaffensis is split from Z. poliogastrus based on mtDNA divergence and differences in plumage (Habel et al. 2015; del Hoyo & Collar 2016; Martins et al. 2020; HBW/BirdLife). Tentatively includes kulalensis. Spelling of English name "Kafa" rather than "Kaffa" follows HBW/BirdLife.
Angola White-eye	Zosterops kasaicus	ADD	AS	Northern Yellow White-eye	Angola White-eye Zosterops kasaicus (including heinrichi and quanzae) is split from Northern Yellow White-eye Z. senegalensis on the basis of phylogenetic divergence (Martins et al. 2020). The specific epithet kasaicus Chapin, 1932 has priority over quanzae Meyer de Schauensee, 1933 [often attributed to 1932 but not actually published until 1933. (fide R. Dowsett)].
Buff-chested Babbler	Cyanoderma ambiguum	DEL	AL		Buff-chested Babbler Cyanoderma ambiguum (including planicola, adjunctum, and insuspectum) is lumped with Rufous-fronted Babbler C. rufifrons. Basis of initial separation is dubious, and there is no proven sympatry nor obvious dichotomy in plumage or voice between the two forms (Harrison 1987; Inskipp et al. 1996; Robson 2005; Rasmussen & Anderton 2012; del Hoyo & Collar 2016; HBW/BirdLife).
Red-eyed Scimitar Babbler	Erythrogenys imberbis	ADD	AS	Rusty-cheeked Scimitar Babbler	Red-eyed Scimitar Babbler Erythrogenys imberbis (including celata) is split from Rusty-cheeked Scimitar Babbler E. erythrogenys based on differences in morphology and vocalizations (Berryman et al. 2023).
Grey-browed Wren	Pheugopedius schulenbergi	ADD	AS	Plain-tailed Wren	Grey-browed Wren Pheugopedius schulenbergi is split from Plain-tailed Wren P. euophrys based on its distinctive vocalizations and modest morphological differences (del Hoyo & Collar 2016; HBW BirdLife).
Southern House Wren	Troglodytes musculus	ADD	AS	Northern House Wren	Southern House Wren Troglodytes musculus (21 subspecies) is split from House Wren Troglodytes aedon s.l. based on deep genomic divergence (Klicka et al. 2023) and differences in vocalizations and morphology (Oberholser 1904; Sosa-López & Mennill 2014; Sosa-López et al. 2016). See Chesser et al. (2024).
Cozumel Wren	Troglodytes beani	ADD	AS	Southern House Wren	Cozumel Wren Troglodytes beani is split from House Wren Troglodytes aedon s.l. based on differences in plumage, vocalizations and genetics (Oberholser 1904; Sosa-López & Mennill 2014; Sosa-López et al. 2016; Boesman 2016 ; Klicka et al. 2023). See Chesser et al. (2024).
Kalinago Wren	Troglodytes martinicensis	ADD	AS	Cozumel Wren	Kalinago Wren Troglodytes martinicensis (including guadeloupensis and rufescens) is split from House Wren Troglodytes aedon s.l. based on differences in plumage and on Dominica, where the species is extant, also by vocalizations and genetics (Wetten 2021; Klicka et al. 2023). See Chesser et al. (2024).
St. Lucia Wren	Troglodytes mesoleucus	ADD	AS	Kalinago Wren	St. Lucia Wren Troglodytes mesoleucus is split from House Wren Troglodytes aedon s.l. based on ecology, behavior, morphology and vocalizations (Oberholser 1904; Gilardi & John 1998; Wetten 2021). See Chesser et al. (2024).
St. Vincent Wren	Troglodytes musicus	ADD	AS	St. Lucia Wren	St. Vincent Wren Troglodytes musicus is split from House Wren Troglodytes aedon s.l. based on differences in vocalizations, plumage, ecology and genetics (Oberholser 1904; Klicka et al. 2023). See Chesser et al. (2024).
Grenada Wren	Troglodytes grenadensis	ADD	AS	St. Vincent Wren	Grenada Wren Troglodytes grenadensis is split from House Wren Troglodytes aedon s.l. based on differences in morphology and genetics (Wetten 2021; Klicka et al. 2023). See Chesser et al. (2024).
Northern Chestnut-breasted Wren	Cyphorhinus dichrous	ADD	AS	Wing-banded Wren	Northern Chestnut-breasted Wren Cyphorhinus dichrous is split from (Southern) Chestnut-breasted Wren C. thoracicus based on strking vocal differences despite minor morphological difference (del Hoyo & Collar 2016; HBW/BirdLife).
Maranon Gnatcatcher	Polioptila maior	ADD	AS	Tropical Gnatcatcher	Maranon Gnatcatcher Polioptila maior is split from Tropical Gnatcatcher Polioptila plumbea. It is morphologically, genetically, and vocally distinct and it lacks significant sexual dimorphism (Smith et al. 2018; del Hoyo & Collar 2016; HBW/BirdLife 2016).
St. Lucia Thrasher	Ramphocinclus sanctaeluciae	ADD	AS	Martinique (White-breasted) Thrasher	St. Lucia Thrasher Ramphocinclus sanctaeluciae is split from White-breasted (Martinique) Thrasher Ramphocinclus brachyurus based deep genetic divergence combined with differences in plumage and voice (del Hoyo & Collar 2016; DaCosta et al. 2019; Chesser et al. 2024).
Mindoro Island Thrush	Turdus mindorensis	ADD	AS	Izu Thrush	Monotypic Mindoro Island Thrush T. mindorensis is split from T. poliocephalusis. It is the most deeply basal taxon in the Island Thrush complex (Reeve Clade A).
Luzon Island Thrush	Turdus thomassoni	ADD	AS	Mindoro Island Thrush	Luzon Island Thrush T. thomassoni (including mayonensis) is split from T. poliocephalus. It is the second most basal clade in the Island Thrush radiation (Reeve et al. Clade B).
Mindanao Island Thrush	Turdus nigrorum	ADD	AS	Luzon Island Thrush	Mindanao Island Thrush T. nigrorum (including malindangensis, katanglad, and kelleri) is split from T. poliocephalus. It corresponds to Clade C of Reeve et al. (2023).
Wallacean Island Thrush	Turdus schlegelii	ADD	AS	Mindanao Island Thrush	Wallacean Island Thrush Turdus schlegelii (including sterlingi, celebensis, and hygroscopus) is split from T. poliocephalus. It corresponds to the major subclade of Clade D in Reeve et al. (2023).
Christmas Island Thrush	Turdus erythropleurus	ADD	AS	Wallacean Island Thrush	Monotypic Christmas Island Thrush Turdus erythropleurus is split from T. poliocephalus. It forms a distinct subclade of Clade D of Reed et al. (2023). It differs from other taxa within that clade by moderate differences in plumage in addition to its unique biogeography, and different voice.
Sundaic Island Thrush	Turdus javanicus	ADD	AS	Christmas Island Thrush	Sundaic Island Thrush Turdus javanicus (including loeseri, indrapurae, fumidus, stresemanni, whiteheadi, and seebohmi) is split from T. poliocephalus. It corresponds to Clade E of Reeve et al. (2023).
Moluccan Island Thrush	Turdus deningeri	ADD	AS	Sundaic Island Thrush	Moluccan Island Thrush Turdus deningeri is split from T. poliocephalus. It correstponds to Clade F of Reeve et al. (2023). Tentatively includes sukahujan (WGAC 998) but that taxon is quite phenotypically distinct. It may likely deserve full species status. Not included in Reeve et al. (2023).
Papuan Island Thrush	Turdus papuensis	ADD	AS	Moluccan Island Thrush	Papuan Island Thrush Turdus papuensis (including versteegi and canescens) is split from T. poliocephalus. It correstponds to Clade G of Reeve et al. (2023).
Bismarck Island Thrush	Turdus heinrothi	ADD	AS	Papuan Island Thrush	Bismarck Island Thrush Turdus heinrothi (including beehleri and tolokiwae) is split from T. poliocephalus. It correstponds to Clade H of Reeve et al. (2023).
Bougainville Island Thrush	Turdus bougainvillei	ADD	AS	Bismarck Island Thrush	Monotypic Bougainville Island Thrush Turdus bougainvillei is split from T. poliocephalus. It correstponds to Clade I of Reeve et al. (2023).
Solomons Island Thrush	Turdus kulambangrae	ADD	AS	Bougainville Island Thrush	Solomons Island Thrush Turdus kulambangrae (including sladeni) is split from T. poliocephalus. It correstponds to Clade J of Reeve et al. (2023).
Vanikoro Island Thrush	Turdus vanikorensis	ADD	AS	Solomons Island Thrush	Vanikoro Island Thrush Turdus vanikorensis (including rennellianus, efatensis, becki, malekulae, mareensis, placens, and whitneyi) is split from T. poliocephalus. It correstponds to Clade K of Reeve et al. (2023).
White-headed Island Thrush	Turdus pritzbueri	ADD	AS	Vanikoro Island Thrush	White-headed Island Thrush Turdus pritzbueri (including albifrons) is split from T. poliocephalus. It forms a distinctive subclade of Clade L of Reeve et al. (2023).
New Caledonian Island Thrush	Turdus xanthopus	ADD	AS	White-headed Island Thrush	Monotypic New Caledonian Island Thrush Turdus xanthopus is split from T. poliocephalus. It forms a basal branch to the remaining species in Clade L of Reeve et al (2023).
Tasman Sea Island Thrush	Turdus poliocephalus	ADD	AS	New Caledonian Island Thrush	Tasman Sea Island Thrush Turdus poliocephalus (including vinitinctus) are both extinct Tasman Sea island edemics that share a branch in Clade L of Reeve et al (2023).
Samoan Island Thrush	Turdus samoensis	ADD	AS	Tasman Sea Island Thrush	Monotypic Samoan Island Thrush Turdus samoensis is split from T. poliocephalus. It forms a short branch in Clade L of Reeve et al. (2023).
Fiji Island Thrush	Turdus ruficeps	ADD	AS	Samoan Island Thrush	Fiji Island Thrush Turdus ruficeps (including hades, tempesti, vitiensis and layardi) is split from T. poliocephalus. Its subspecies, though relatively variable in plumage, form a terminal polytomy within Clade L of Reeve et al. (2023).
Maratua Shama	Copsychus barbouri	ADD	AS	White-crowned Shama	Maratua Shama C. barbouri is split from White-crowned Shama based on morphology and mtDNA divergence (Chua et al. 2015; Eaton et al. 2016, 2021).
Sri Lanka Shama	Copsychus leggei	ADD	AS	Kangean Shama	Sri Lanka Shama Copsychus leggei is split from White-rumped Shama based on genomic studies (Wu et al. 2022).
Kangean Shama	Copsychus nigricauda	ADD	AS	Maratua Shama	Kangean Shama Copsychus nigricauda is split from White-rumped Shama based on genomic studies (Wu et al. 2022).
Larwo Shama	Copsychus omissus	ADD	AS	Andaman Shama	Larwo Shama Copsychus omissus (including javanus) is split from White-rumped Shama based on genomic studies. It is the most basal taxon in the White-rumped Shama/White-crowned Shama radiation (Wu et al. 2022).
Taiwan Bush Robin	Tarsiger formosanus	ADD	AS	White-browed Bush Robin	Taiwan Bush Robin Tarsiger formosanus is split from Tarsiger indicus based on phylogenetic analysis coupled with differences in plumage, morphology and song (Wei et al. 2022).
Qilian Bluetail	Tarsiger albocoeruleus	ADD	AS	Red-flanked Bluetail	Qilian Bluetail Tarsiger albocoeruleus (resurrected name) is split from Red-flanked Bluetail T. cyanurus based on strong differences in song and morphometrics supported by phylogenetic analysis (Wei et al. 2022).
Flores Flowerpecker	Dicaeum rhodopygiale	ADD	AS	Blood-breasted Flowerpecker	Flores Flowerpecker Dicaeum rhodopygiale is split from Blood-breasted Flowerpecker D. sanguinolentum on the basis of plumage and vocal differences (Rheindt & Eaton 2019)
Sumba Flowerpecker	Dicaeum wilhelminae	ADD	AS	Flores Flowerpecker	Sumba Flowerpecker Dicaeum wilhelminae is split from Blood-breasted Flowerpecker D. sanguinolentum on the basis of plumage and vocal differences (Rheindt & Eaton 2019).
Timor Flowerpercker	Dicaeum hanieli	ADD	AS	Sumba Flowerpecker	Timor Flowerpecker Dicaeum hanieli is split from Blood-breasted Flowerpecker D. sanguinolentum on the basis of plumage and vocal differences (Rheindt & Eaton 2019).
Gorgeous Sunbird	Cinnyris melanogastrus	ADD	AS	Beautiful Sunbird	Gorgeous Sunbird Cinnyris melanogastrus is split from Beautiful Sunbird C. pulchellus based on parapatry with consistent differences in morphology (del Hoyo & Collar 2016; HBW/BirdLife).
Siberian Pipit	Anthus japonicus	ADD	AS	Red-throated Pipit	Siberian Pipit Anthus japonicus is split from Buff-bellied (American) Pipit A. rubescens based on differences in morphology, genetics and flight calls (Chesser et al. 2024).
Lesser Redpoll, Arctic Redpoll	Acanthis cabaret, Acanthis hornemanni	DEL	AL		Treat all of the redpoll taxa as conspecific with the English name "Redpoll" (IOC 14.2) following Chesser et al. (2024) based on genomic homogeneity, continuous phenotypic variation, overlapping habitat, and lack of evidence of prolonged isolation (Mason & Taylor 2015; Funk et al. 2021).
Grey-crowned Goldfinch	Carduelis caniceps	ADD	AS	European Goldfinch	Grey-crowned Goldfinch Carduelis caniceps (including ssp. paropanisi, subulata, and ultima) is split from European Goldfinch C. carduelis on the basis of difference in plumage, bill morphology, and voice (del Hoyo & Collar 2016; HBW/BirdLife). English name under discussion.
Maranon Sparrow	Arremon nigriceps	ADD	AS	Black-capped Sparrow	Maranon Sparrow Arremon nigriceps is split from Black-capped Sparrow A. abeillei based on differences in plumage, vocalizations, and genetic divergence comparable to similar species pairs within the genus (del Hoyo & Collar 2016; HBW/BirdLife; Buainain et al 2022).
Taczanowski's Brushfinch	Atlapetes taczanowskii	ADD	AS	Slaty Brushfinch	Taczanowski's Brushfinch Atlapetes taczanowskii is split from Slaty Brushfinch A. schistaceus based on differences in morphology, vocalizations and mtDNA divergence (del Hoyo & Collar 2016; HBW/BirdLife; Sánchez-González et al. 2015).

Species Updates IOC Version 14.1

English Name	Scientific Name	Change	Code	List After Species	Source
Yellow-billed Egret	Ardea brachyrhyncha	ADD	AS	Great Egret	Yellow-billed Egret Ardea brachyrhyncha is split from Ardea intermedia based on differences in proportions and substantial differences in high breeding plumage (del Hoyo & Collar 2014; WGAC).
Plumed Egret	Ardea plumifera	ADD	AS	Medium (Intermediate) Egret	Plumed Egret Ardea plumifera is split from Ardea intermedia based on differences in proportions and substantial differences in high breeding plumage (del Hoyo & Collar 2014; WGAC).
Northern Black-throated Trogon	Trogon tenellus	ADD	AS	Surucua Trogon	Northern Black-throated Trogon Trogon tenellus is split from T. rufus on the basis of deep genetic divergence combined with vocal and morphological differention (Dickens et al. 2021; SACC 921; WGAC). English name tentative.
Choco Black-throated Trogon	Trogon cupreicauda	ADD	AS	Northern Black-throated Trogon	Choco Black-throated Trogon Trogon cupreicauda is split from T. rufus on the basis of deep genetic divergence combined with vocal and morphological differention (Dickens et al. 2021; SACC 921; WGAC). English name tentative.
Atlantic Black-throated Trogon	Trogon chrysochloros	ADD	AS	Amazonian Black-throated Trogon	Atlantic Black-throated Trogon Trogon chrysochloros (including muriciensis) is split from T. rufus based on moderate genetic divergence combined with vocal and morphological differention (Dickens et al. 2021; SACC 921; WGAC). English name tentative.
Eastern Dwarf Hornbill	Horizocerus granti	ADD	AS	Western Dwarf Hornbill	Horizocerus granti is split from Horizocerus hartlaubi on the basis of differences in plumage and bill morphology (del Hoyo & Collar 2014; HBW/BirdLife; WGAC).
Eastern Long-tailed Hornbill	Horizocerus cassini	ADD	AS	Western Long-tailed Hornbill	Monotypic Horizocerus cassini is split from essentially parapatric Horizocerus albocristatus on the basis of differences in plumage and bill markings (del Hoyo & Collar 2014; HBW/BirdLife).
Rufous-backed Dwarf Kingfisher	Ceyx rufidorsa	ADD	AS	Black-backed Dwarf Kingfisher	Rufous-backed Dwarf Kingfisher Ceyx rufidorsa (including motleyi, captus, and jungei) is split from Ceyx erithaca. Recent genomic studies convincingly show that Ceyx rufidorsa is not a morph of Ceyx erithaca but rather is a genetically distinct taxon. Further, the polymorphism shown within Ceyx rufidorsa is likely due to an ancient introgression of genes rather than more recent, on-going, hybridization which is limited to a narrow zone where these two species meet in n peninsular Malaysia (Lim et al. 2010; Shakya et al. 2023).
Blue-eared Barbet	Psilopogon cyanotis	ADD	AS	Yellow-eared Barbet	Psilopogon cyanotis is split from Psilopogon duvaucelii based on facial plumage and a narrow hybrid zone where they come in contact in nw peninsular Malaysia. The more widely distributed P. cyanotis assumes the English name "Blue-eared Barbet" while the more range restricted Psilopogon duvaucelii becomes "Black-eared Barbet"(del Hoyo & Collar 2014; HBW/BirdLife; WGAC).
Siau Pitta	Erythropitta palliceps	DEL	AL		Treat E. palliceps as a subspecies of Sulawesi Pitta E. celebensis (Eaton et al. 2021).
Sangihe Pitta	Erythropitta caeruleitorques	DEL	AL		Treat E. caeruleitorques as a subspecies of Sulawesi Pitta E. celebensis (Eaton et al. 2021).
Nicobar Hooded Pitta	Pitta abbotti	ADD	AS	Western Hooded Pitta	Nicobar Hooded Pitta Pitta abbotti is split from the Hooded Pitta complex on the basis of morphological and vocal differences supported by genomic data (Ericson et al. 2019; Rasmussen in litt.; WGAC).
Minahasa Hooded Pitta	Pitta forsteni	ADD	AS	Nicobar Hooded Pitta	Minahasa Hooded Pitta P. forsteni is split from the Hooded Pitta complex based on morphological and vocal differences supported by genomic analysis (Ericson et al. 2019; Eaton et al. 2021; WGAC).
Eastern Hooded Pitta	Pitta novaeguineae	ADD	AS	Minahasa Hooded Pitta	Eastern Hooded Pitta P. novaeguineae (including goodfellowi and mefoorana) is split from the Hooded Pitta complex based on morphology and vocalizations supported by genomic analysis (Gregory 2017; Ericson et al. 2019; HBW/BirdLife; WGAC).
Biak Hooded Pitta	Pitta rosenbergii	ADD	ADD	Eastern Hooded Pitta	Biak Hooded Pitta P. rosenbergii is split from the Hooded Pitta complex based on morphology and vocalizations supported by genomic analysis (Gregory 2017; Ericson et al. 2019; HBW/BirdLife; WGAC).
Northern Royal Flycatcher	Onychorhynchus mexicanus	DEL	AL		Northern Royal Flycatcher Onychorhynchus mexicanus (including fraterculus) was formerly split from O. coronatus (Stotz et al. 1996; BLI). However, phylogenetic analyses reveal only shallow divergence from all forms except swainsoni (Harvey et al. 2020 ; Reyes et al. 2023), and vocalizations are indistinguishable from O. coronatus. Despite phenotypic distinctiveness from other forms within the O. coronatus radiation, mexicanus and fraterculus are better treated as subspecies of O. coronatus (WGAC 835).
Pacific Royal Flycatcher	Onychorhynchus occidentalis	DEL	AL		Pacific Royal Flycatcher Onychorhynchus occidentalis was formerly split from O. coronatus (Stotz et al. 1996; BLI). However, phylogenetic analyses reveal only shallow divergence from all forms except swainsoni (Harvey et al. 2020 ; Reyes et al. 2023), and vocalizations are indistinguishable from O. coronatus. Despite phenotypic distinctiveness from other forms within the O. coronatus radiation, occidentalis is better treated as a subspecies of O. coronatus (WGAC 835).
Madagascar Martin	Riparia cowani	ADD	AS	Brown-throated Martin	Madagascar Martin Riparia cowani is split from Riparia paludicola based on morphology and vocalizations (del Hoya & Collar 2016; HBW/BirdLife).
White-gorgeted Fantail	Rhipidura coultasi	ADD	AS	White-winged Fantail	White-gorgeted Fantail Rhipidura coultasi is split from Rhipidura cockerelli on the basis of pronounced differences in plumage and vocal differences suggested by the limited material available (Dutson 2011; HBW/BirdLife; WGAC).
Guadalcanal Fantail	Rhipidura ocularis	ADD	AS	Bougainville Fantail	Guadalcanal Fantail Rhipidura ocularis is split from Brown (now Bougainville) Fantail Rhipidura drownei based on pronounced differences in vocalizations and differences in plumage (HBW/BirdLife; WGAC).
Vanuatu Streaked Fantail	Rhipidura spilodera	ADD	AS	New Caledonian Streaked Fantail	Vanuatu Streaked Fantail Rhipidura spilodera is split from other species within the Streaked Fantail species complex based on differences in morphology and vocalizations (HBW/BirdLife, WGAC).
Fiji Streaked Fantail	Rhipidura layardi	ADD	AS	Vanuatu Streaked Fantail	Fiji Streaked Fantail Rhipidura layardi (including rufilateralis and erythronota) is split from other species within the Streaked Fantail species complex based on differences in morphology and vocalizations (HBW/BirdLife, WGAC). The three Fijian subspecies may need further splitting into 2 or 3 species pending genomic studies and denser bioacoustic sampling.
Supertramp Fantail	Rhipidura semicollaris	ADD	AS	Arafura Fantail	Supertramp Fantail Rhipidura semicollaris (including all subspecies except dryas and streptophora) is split from Arafura Fantail R. dryas on the basis of vocalizations (Eaton et al. 2021; WGAC).
Gilolo Fantail	Rhipidura torrida	ADD	AS	Supertramp Fantail	Gilolo Fantail Rhipidura torrida is split from R. rufifrons based on plumage and voice supported by deep genetic divergence (Eaton et al. 2021; Klicka et al. 2023; WGAC).
Louisiade Fantail	Rhipidura louisiadensis	ADD	AS	Pohnpei Fantail	Louisiade Fantail Rhipidura louisiadensis is split from the Rufous Fantail species complex on the basis of deep genetic divergence supported by differences in plumage and voice (Klicka et al. 2023; WGAC).
Santa Cruz Fantail	Rhipidura melanolaema	ADD	AS	Louisiade Fantail	Santa Cruz Fantail Rhipidura melanolaema (including agilis and utupuae) is split from the Rufous Fantail species complex on the basis of genetic divergence (only agilis examined) supported by differences in plumage and voice (Klicka et al. 2023; WGAC).
Micronesian Rufous Fantail	Rhipidura versicolor	ADD	AS	Santa Cruz Fantail	Micronesian Rufous Fantail Rhipidura versicolor (including uraniae, saipanensis, and mariae) is split from the Rufous Fantail species complex on the basis of deep genetic divergence (only saipanensis examined) supported by differences in plumage and voice (Klicka et al. 2023; WGAC).
Solomons Rufous Fantail	Rhipidura rufofronta	ADD	AS	Micronesian Rufous Fantail	Solomons Rufous Fantail Rhipidura rufofronta (including commoda, granti, brunnea, ugiensis, russata, and kuperi) is split from the Rufous Fantail species complex on the basis of genetic divergence supported by differences in plumage and voice. Further division of this species may be warranted based on the structure of the phylogenetic tree, but require additional studies (Klicka et al. 2023; WGAC).
Eye-ringed Parrotbill	Suthora ricketti	ADD	AS	Brown-winged Parrotbill	Eye-ringed Parrotbill Suthora ricketti is split from S. brunnea based on DNA analysis, morphology, and difference in calls (Deignan 1964; Robson 2007; Penhallurick & Robson 2009; Yeung et al. 2011; del Hoyo & Collar 2016;HBW/BirdLife). This species is frequently called "Yunnan Parrotbill" in other sources (e.g. HBW/BirdLife).
Glissando Babbler, Leaflitter Babbler	Pellorneum saturatum, Pellorneum poliogene	ADD	AS	Mourning Babbler	Split Glissando Babbler Pellorneum saturatum and Leaflitter Babbler Pellorneum poliogene from Mourning Babbler (formerly Short-tailed Babbler) Pellorneum malaccense based on pronounced vocal and genetic differences (Garg et al. 2021; Eaton et al. 2021).
Bornean Swamp Babbler	Pellorneum macropterum	ADD	AS	Malayan Swamp Babbler	Pellorneum macropterum Bornean Swamp Babbler is split from P. rostratum Malayan Swamp Babbler (formerly White-chested Babbler) based on vocal and genetic differences (Cros et al. 2020; Eaton et al. 2021).
Pink-breasted Flowerpecker	Dicaeum keiense	ADD	AS	Blue-cheeked Flowerpecker	Pink-breasted Flowerpecker Dicaeum keiense (including fulgidum) is split from Mistletoebird Dicaeum hirundinaceum based on significant differences in morphology (Eaton et al. 2021; HBW/BirdLife; WGAC)
Cambodian Flowerpecker, Sumatran Flowerpecker, Fire-throated Flowerpecker	Dicaeum cambodianum, Dicaeum beccarii, Dicaeum luzoniense	ADD	AS	Fire-breasted Flowerpecker	Cambodian Flowerpecker Dicaeum cambodianum, Sumatran Flowerpecker Dicaeum beccarii, and Fire-throated Flowerpecker Dicaeum luzoniense (including bonga and apo) are split from Fire-breasted Flowerpecker D. ignipectus based on substantial, non-clinal differences in plumage (HBW/BirdLife, WGAC).
Ornate Sunbird, Palawan Sunbird, Sahul Sunbird, Tukangbesi Sunbird, Flores Sea Sunbird, South Moluccan Sunbird, Mamberamo Sunbird	Cinnyris ornatus, Cinnyris aurora, Cinnyris frenatus, Cinnyris infrenatus, Cinnyris teysmanni, Cinnyris clementiae, Cinnyris idenburgi	ADD	AS	Purple Sunbird	Olive-backed (now Garden) Sunbird Cinnyris jugularis is split into eight species based on a combination of bioacoustic differences, mtDNA data (Lohman et al. 2010; Marcaigh et al. 2022) and, in many instances, substantial differences in plumage (WGAC). Rand's Sunbird was also previously split by HBW/BirdLife, del Hoyo & Collar 2016; Gregory 2017).
Luzon Sunbird, Bohol Sunbird	Aethopyga jefferyi, Aethopyga decorosa	DEL	AL		Luzon Sunbird A. jefferyi and Bohol Sunbird A. decorosa are relumped (14.1) with Metallic-winged Sunbird A. pulcherrima. Despite deep mtDNA divergence, supplemented by a limited number of nuclear intron markers, plumage differences are minute and vocal differences are not apparent in the limited number of individuals examined (HBW/BirdLife; WGAC 863).

Species Updates IOC Version 13.2

English Name	Scientific Name	Change	Code	List After Species	Source
Chirruping Nightjar	Caprimulgus griseatus	ADD	AS	Savanna Nightjar	Chirruping Nightjar Caprimulgus griseatus (tentatively including mindanensis) is a split from Savanna Nightjar C. affinis based on significant differences in vocalizations (Sangster et al. 2021). English name, which differs from the name proposed by the original authors, is based on its distinctive vocalizations.
Tibetan Sand Plover	Charadrius atrifrons	ADD	AS	Siberian Sand Plover	Tibetan Sand Plover Charadrius atrifrons (including pamirensis and schaeferi) is split from Lesser Sand Plover C. mongolus (re-named Siberian Sand Plover) based on phenotypic differences and phylogenetic analysis which demonstrates paraphyly of these two taxa relative to Charadrius leschenaultii (Livezey 2010; Wei et al. 2022).
American Goshawk	Accipiter atricapillus	ADD	AS	Eurasian Goshawk	American Goshawk Accipiter atricapillus (including laingi and apache) is split from Northern Goshawk A. gentilis based on differences in vocalizations, morphology, and mitochondrial and genomic DNA divergence (Geraldes et al. 2019; Kunz et al. 2019; Sangster 2022).
Vermiculated Screech Owl	Megascops vermiculatus	DEL	AL		Vermiculated Screech Owl Megascops vermiculatus is re-lumped (13.2) with Middle American Screech Owl M. guatemalae based on vocal similarities and distribution, pending further analyses (NACC; Clements).
West African Pied Hornbill	Lophoceros semifasciatus	ADD	AS	Crowned Hornbill	West African Pied Hornbill Lophoceros semifasciatus is split from Congo (African) Pied Hornbill L. fasciatus based on differences in morphology with only a narrow hybrid zone in se Nigeria (del Hoyo & Collar 2014; HBW/BirdLife).
White-chested Tinkerbird	Pogoniulus makawai	DEL	AL		White-chested Tinkerbird P. makawai, known only from the unique type specimen, was previously treated as a species based on its distinctive morphology (Collar & Fishpool 2006, HBW/BirdLife). But the preponderance of evidence points to it being better treated more likely as an aberrent individual of Yellow-rumped Tinkerbird P. bilineatus (Short & Horne 2001). Available mtDNA data demonstrate it to be deeply embedded within the P. bilineatus complex, which is also supported by limited nDNA results (Kirschel et al. 2018).
Black-dotted Piculet	Picumnus nigropunctatus	DEL	AL		Lump "Black-dotted Piculet" Picumnus nigropunctatus Zimmer & Phelps,1950 with Scaled Piculet Picumnus squamulatus obsoletus Allen, 1892 following Rêgo et al. (2014) and SACC. But whether P. s. obsoletus itself should be elevated to full species status requires a more comprehensive reassessment and understanding of the complex and confusing Picumnus taxonomy in this region.
Necklaced Woodpecker	Dryobates pernyii	ADD	AS	Crimson-naped Woodpecker	Necklaced Woodpecker Dryobates pernyii (including tenebrosus and innixus) is split from Dryobates cathpharius based on substantial differences in plumage, particularly the distribution of red on the crown and nape and well-defined necklace on the upper breast (del Hoyo & Collar 2014; BirdLife). English name aligns with Clements/eBird.
Scaly-breasted Woodpecker	Celeus grammicus	DEL	AL		Scaly-breasted Woodpecker Celeus grammicus (including verreauxii, subcervinus and latifasciatus) is lumped with Waved Woodpecker Celeus undatus due to their lack of diagnostic vocal, plumage, or genetic differences (Benz & Robbins, 2011; Sampaio et al. 2018; HBW/BirdLife).
Splendid Woodpecker	Campephilus splendens	ADD	AS	Powerful Woodpecker	Splendid Woodpecker Campephilus splendens is split from Crimson-bellied Woodpecker C. haematogaster on several differences in plumage, as well as different calls and pattern of drumming (Ridgely & Greenfield 2001; del Hoyo & Collar 2014; Donegan et al. 2015; HBW/BirdLife).
Buff-rumped Woodpecker	Meiglyptes grammithorax	ADD	AS	Rufous Woodpecker	Buff-rumped Woodpecker Meiglyptes grammithorax is split from Zebra Woodpecker M. tristis based on consistent morphologic differences (del Hoyo & Collar 2014; BirdLife; contra Eaton et al. 2021). Note the English name "Buff-rumped Woodpecker" goes with this species, the split taxon.
Citron-crested Cockatoo	Cacatua citrinocristata	ADD	AS	Yellow-crested Cockatoo	Citron-crested Cockatoo Cacatua citrinocristata is split from C. sulphurea based on morphological differences (Collar & Marsden 2014; Eaton et al. 2021; HBW/BirdLife).
Tres Marias Amazon	Amazona tresmariae	DEL	AL		Relump Tres Marias Amazon Amazona tresmariae with Amazona oratrix following NACC, HBW/BirdLife. Insufficient genetic, vocal and morphologic evidence to support the original split in light of rigorous re-evaluation of original and more recent publications. The paraphyly shown in the mtDNA study of Eberhard & Bermingham (2004) is not reproduced in Smith et al. (2022) which shows oratrix and tresmariae to be sister taxa.
Northern Mealy Amazon	Amazona guatemalae	DEL	AL		Northern Mealy Amazon Amazona guatemalae (including virenticeps) was originally split from [Southern] Mealy Amazon A. farinosa on the basis of deep mtDNA divergence and differences in morphology (Wenner et al. 2012; HBW Alive; del Hoyo & Collar 2014; HBW/BirdLife). But despite their deep mtDNA divergence, the two Mealy Parrot species apparently demonstrate a broad morphological intergrade zone in Panama and are not vocally distinct (Hellmich et al. 2021). See NACC 2023-A-16.
Western Ground Parrot	Pezoporus flaviventris	DEL	AL		Western Ground Parrot was split from [Eastern] Ground Parrot based on deep mtDNA divergence (Murphy et al. 2010). But morphological differences between the two forms are minimal, and the split recognized by Murphy was based on a single mitochondrial gene. Both HBW/BirdLife and Clements treat them as conspecific.
Grey-lored Broadbill	Serilophus rubropygius	ADD	AS	Wattled Broadbill	Grey-lored Broadbill Serilophus rubropygius is split from Silver-breasted Broadbill Serilophus lunatus based on significant differences in morphology and parapatry without evidence of intergradation (Dekker & Dickinson 2000; del Hoyo & Collar 2016; HBW/BirdLife). See also Rasmussen & Anderton (2012).
Little Long-tailed Woodcreeper	Deconychura typica	ADD	AS	Olivaceous Woodcreeper	Little Long-tailed Woodcreeper Deconychura typica (including darienensis and minor) is split from the "Long-tailed Woodcreeper" complex, based on morphological and vocal differences supported by genetic analysis (Barbosa 2010; del Hoyo & Collar 2016; Greeney et al. 2023; HBW/BirdLife).
Southern Long-tailed Woodcreeper	Deconychura pallida	ADD	AS	Northern Long-tailed Woodcreeper	Southern Long-tailed Woodcreeper Deconychura pallida (including connectens and zimmeri) is split from the "Long-tailed Woodcreeper" complex, based on morphological and vocal differences supported by genetic analysis (Barbosa 2010; del Hoyo & Collar 2016; Greeney et al. 2023; HBW/BirdLife). Species epithet pallida, simultaneously published with connectens, is awarded precedence by first reviser action (del Hoyo & Collar 2016).
Brigida's Woodcreeper	Hylexetastes brigidai	DEL	AL		Brigida's Woodcreeper was described as a new species by Silva et al. (1995) and was formerly treated as so. But subsequently treated as a subspecies of Hylexetastes uniformis based on genetic analysis supported by similarity of plumage and vocalizations (Azuaje‐Rodríguez et al. 2020; SACC 897).
Tschudi's Woodcreeper	Xiphorhynchus chunchotambo	DEL	AL		Tschudi's Woodcreeper Xiphorhynchus chunchotambo (incuding napensis and brevirostris) was split from X. ocellatus in v 1.6 (Aleixo 2002; Marantz et al. 2003). But the deep mtDNA divergence which contributed to the decision to retain the split of X. chunchotambo is equally shared by ssp. beauperthuysii which was not split at the time (Sousa-Neves et al. 2013). Tentatively relump with X. ocellatus following SACC 600 for lack of clarity regarding the considerable vocal and genetic variation within this complex.
Tapajos Scythebill	Campylorhamphus probatus	ADD	AS	Curve-billed Scythebill	Tapajos Scythebill Campylorhamphus probatus (including cardosoi) is split from Curve-billed Scythebill C. procurvoides based on phylogenetic analysis and vocalizations (Aleixo et al. 2013; Sousa-Neves et al. 2013; HBW/BirdLife).
Xingu Scythebill	Campylorhamphus multostriatus	ADD	AS	Tapajos Scythebill	Xingu Scythebill Campylorhamphus multostriatus is split from Curve-billed Scythebill C. procurvoides based on phylogenetic analysis and vocalizations (Aleixo et al. 2013; Sousa-Neves et al. 2013; HBW/BirdLife).
Plain Xenops	Xenops genibarbis	ADD	AS	Slender-billed Xenops	Polytypic Xenops genibarbis (ten subspecies) is split from monotypic Xenops minutus based on morphological, vocal, and genetic differences (Harvey & Brumfield 2015, del Hoyo & Collar 2016; HBW/BirdLife). This polytypic species, with the largest range, retains the English name Plain Xenops.
Fawn-throated Foliage-gleaner	Automolus cervinigularis	ADD	AS	Brown-rumped Foliage-gleaner	Fawn-throated Foliage-gleaner Automolus cervinigularis (including hypophaeus) is split from Ochre-throated (Buff-throated) Foliage-gleaner A. ochrolaemus based on genetic analysis (Smith et al. 2014; Schultz et al. 2017) and vocal differences.
Puna Canastero	Asthenes sclateri	DEL	AL		Puna Canastero Asthenes sclateri (including punensis, cuchacanchae, lilloi, brunnescens) is lumped with Streak-backed Canastero Asthenes wyatti. Morphological and vocal differences are slight and there is a zone of intergradation in se Peru to nw Bolivia (del Hoyo & Collar 2016; HBW/BirdLife)
Vilcabamba Spinetail	Cranioleuca weskei	ADD	AS	Russet-mantled Softtail	Vilcabamba Spinetail Cranioleuca weskei is split from Marcapata Spinetail Cranioleuca marcapatae based on differences in plumage and, perhaps, vocalizations (del Hoyo & Collar 2016; HBW/BirdLife).
Araguaia Spinetail	Synallaxis simoni	ADD	AS	Plain-crowned Spinetail	Araguaia Spinetail Synallaxis simoni is split from White-lored Spinetail S. albilora on the basis of differences in plumage and vocalizations (Boesman 2016; HBW/BirdLife).
Boyaca Antpitta, Atuen Antpitta	Grallaria alticola, Grallaria atuensis	ADD	AS	Tawny Antpitta	Boyaca Antpitta Grallaria alticola and Atuen Antpitta Grallaria atuensis are split from Tawny Antpitta G. quitensis on the basis of morphology and vocalizations (HBW/BirdLife).
Western Olivaceous Flatbill	Rhynchocyclus aequinoctialis	ADD	AS	Fulvous-breasted Flatbill	Western Olivaceous Flatbill Rhynchocyclus aequinoctialis (incuding bardus, minus, jelambianus, tamborensis, flavus, and cryptus) is split from (Eastern) Olivaceous Flatbill R. olivaceus on the basis of bioacoustics and sympatry in western Amazonia supported by genetic analysis (HBW/BirdLife; Simões et al. 2021).
Cordilleran Flycatcher	Empidonax occidentalis	DEL	AL		Pacific-slope Flycatcher Empidonax difficilis and Cordilleran Flycatcher E. occidentalis (including hellmayri) are re-lumped, restoring the original name Western Flycatcher Empidonax difficilis to the recombined species. The two forms demonstrate extensive hybridization in a broad contact zone in w Canada and the northern western USA and lack consistent vocal, genomic and morphological differences (Rush et al. 2009; lack et al. 2019; Hopping 2022; Chesser et al. 2023).
Cryptic Becard	Pachyramphus salvini	ADD	AS	Cinnamon Becard	Cryptic Becard Pachyramphus salvini is split from Black-and-white Becard P. albogriseus on the basis of phylogenetics, morphology and vocalizatons. Monotypic. Includes guayaquilensis (Musher et al. 2023; SACC 955).
Black-and-crimson Oriole	Oriolus consanguineus	ADD	AS	Javan Oriole	Polytypic Black-and-crimson Oriole O. consanguineus (including malayanus and vulneratus) is split from monotypic Javan Oriole O. cruentus based on deep genetic diverence and vocal differences (Jønsson et al. 2019; Eaton et al. 2021; HBW/BirdLife).
Ventriloquial Oriole	Oriolus consobrinus	ADD	AS	Dark-throated Oriole	Ventriloquial Oriole O. consobrinus (including persuasus) is split from Dark-throated Oriole Oriolus xanthonotus based on genomic analysis and differences in morphometrics, plumage and bioacoustics (Rheindt et al. 2022).
Short-tailed Drongo	Dicrurus striatus	ADD	AS	Balicassiao	Initially regarded as a subspecies of D. hottentottus, then subsequently assigned to D. balicassius, Dicrurus striatus (including samarensis) is treated as a separate species, Short-tailed Drongo (Allen 2020; del Hoyo et al. 2020; HBW/BirdLife), on the basis of morphologic differences despite shallow genetic divergence in the phylogenic analysis of Shakya et al. (2020).
Fanti Drongo	Dicrurus atactus	DEL	AL		Fanti Drongo D. atactus was previously split from Velvet-mantled Drongo D. modestus complex following Fuchs et al. (2018). But the genetic divergence is shallow and Dicrurus atactus intergrades with D. modestus coracinus in sw Nigeria and Cameroon (Rocamora & Yeatman-Berthelot 2009). Treat as a subspecies of Velvet-mantled Drongo (del Hoyo & Collar 2016; BirdLife).
Glossy-backed Drongo	Dicrurus divaricatus	DEL	AL		Glossy-backed Drongo D. divaricatus (including lugubris) was formerly split from the Fork-tailed Drongo species complex (D. adsimilis s.l.) based on slight differences in plumage and molecular analysis by Fuchs et al. (2017) which showed a closer relationship with forest-dwelling D. m. atactus. But this is less clear in a subsequent paper by Fuchs et al. (2018) which associates divaricatus, at least in part, with the other African savanna species which accords with ecological and other observations. Further, D. d. divaricatus and D. a. fugax appear to intergrade in n Uganda and Kenya (e.g. Zimmerman et al. 1996; del Hoyo & Collar 2016). Relump Dicrurus divaricatus with Dicrurus adsimilis following del Hoyo & Collar 2016 and BirdLife.
Western Square-tailed Drongo	Dicrurus occidentalis	DEL	AL		Western Square-tailed Drongo Dicrurus occidentalis was formerly split from Dicrurus ludwigii as a new species (9.1) based on genetic evidence which place it sister to D. sharpei (Fuchs et al., 2018). Subsequently, D. occidentalis has been shown to show no significant morphological or vocal differences from Dicrurus sharpei, despite its genetic divergence, and is lumped with that species (Fishpool et al. 2021).
Sangihe Golden Bulbul, Togian Golden Bulbul, Banggai Golden Bulbul, Sula Golden Bulbul, Halmahera Golden Bulbul, Obi Golden Bulbul	Hypsipetes platenae, Hypsipetes aureus, Hypsipetes harterti, Hypsipetes longirostris, Hypsipetes chloris, Hypsipetes lucasi	ADD	AS	Seram Golden Bulbul	The Northern Golden Bulbul complex Hypsipetes longirostris s.l. is split into six species on the basis of differences in plumage and vocalizations (Collar et al. 2013; Eaton et al. 2021; del Hoyo & Collar 2016; HBW/BirdLife).
Pale-eyed Bulbul	Pycnonotus davisoni	ADD	AS	Streak-eared Bulbul	Pale-eyed Bulbul Pycnonotus davisoni is split from Stripe-throated Bulbul P. finlaysoni based on differences in morphology and sympatry in se Myanmar (Tenasserim) (HBW/BirdLife; Limparungpatthanakij 2022).
Hume's Whitethroat, Desert Whitethroat	Curruca althaea, Curruca minula	DEL	AL		Tentatively lump Hume's Whitethroat Curruca althaea and Desert Whitethroat C. minula with Lesser Whitethroat C. curruca following Clements, HBW/BirdLife, Dickinson & Christidis (2014), and Shirihai & Svensson (2018) pending more comprehensive genomic and vocal analysis. Monotypic; includes monticola (Aymí & Gargallo 2006).
Itombwe Flycatcher	Fraseria itombwensis	DEL	AL		Treat Itombwe Flycatcher Fraseria itombwensis as a subspecies of Chapin's Flycatcher F. lendu following other major world bird lists (Dickinson & Christidis 2014; HBW/BirdLife; Clements).
Greyish-crowned Leafbird	Chloropsis lazulina	DEL	AL		Greyish-crowned Leafbird Chloropsis lazulina (including melliana) was previously split from C. hardwickii based on phylogenetic divergence and plumage differences (Moltesen et al. 2012; HBW/BLI). However, the split of C. lazulina may have been premature, as there appears to be a broad intergradation zone between the two taxa. Relump with Chloropsis hardwickii pending further studies
African Chaffinch, Azores Chaffinch, Madeira Chaffinch, Canary Islands Chaffinch	Fringilla spodiogenys, Fringilla moreletti, Fringilla maderensis, Fringilla canariensis	ADD	AS	Eurasian (Common) Chaffinch	African Chaffinch Fringilla spodiogenys (including africana and harterti), Azores Chaffinch Fringilla moreletti, Madeira Chaffinch Fringilla maderensis, and Canary Islands Chaffinch Fringilla canariensis (including bakeri, ombriosa, and palmae) are split from Eurasian (Common) Chaffinch F. coelebs based on genomic and morphological differences (Recuerda et al. 2021). English name for C. coelebs is provisional.
Puerto Rican Euphonia, Lesser Antillean Euphonia	Chlorophonia sclateri, Chlorophonia flavifrons	ADD	AS	Hispaniolan (Antillean) Euphonia	Puerto Rican Euphonia Chlorophonia sclateri and Lesser Antillean Euphonia Chlorophonia flavifrons are split from Chlorophonia musica based on significant differences in plumage (HBW/BLI; Chesser et al. 2023).
New Hanover Mannikin	Lonchura nigerrima	ADD	AS	Mottled Mannikin (Hunstein's) Mannikin	New Hanover Mannikin Lonchura nigerrima is split from parapatric L. hunsteini on the basis of differences comparable to other parapatric and/or sympatric Lonchura species in the region (Wolters 1979; Sibley & Monroe 1990; Clements).
Vincent's Bunting	Emberiza vincenti	DEL	AL		Vincent's Bunting Emberiza vincenti is a relict split from Gill & Wright (2006) based on Fry & Keith (2004). But it is generally regarded as the terminal form in a cline of subspecies with increasingly dark underparts within Emberiza capensis (Ryan 2018). Song and call notes of vincenti are identical to those of other subspecies (Dowsett-Lemaire & Dowsett 2006). Treat as a subspecies of E. capensis.
Northern Mountain Cacique	Cacicus leucoramphus	DEL	AL		Northern Mountain Cacique Cacicus leucoramphus (including peruvianus) was formerly split from Southern Mountain Cacique C. chrysonotus (Jaramillo & Burke 1999; Ridgely & Greenfield 2001; Hilty 2003) based in morphologic differences and evidence of deep genetic divergence (Powell et al. 2014). But the split is rejected by lack of sampling in the contact zone (SACC 616) and by evidence of phenotypic introgression in Ayacucho, Peru (Hosner et al. 2015).
Ochre Oriole	Icterus fuertesi	DEL	AL		Ochre Oriole Icterus fuertesi was split from I. spurius primarily based on differences in plumage, migratory behavior, and mt DNA divergence (Baker et al. 2003; Kiere et al. 2007). But the mt DNA divergence is minor in those studies, and vocalizations overlap (Hagemeyer et al. 2012; Sturge et al. 2016a). Further, mtDNA and nuclear DNA analysis failed to show reciprocal monophyly or population structure, respectively (Sturge et al. 2016b). See also NACC 2023-A-11.
Grand Cayman Bullfinch	Melopyrrha taylori	ADD	AS	Cuban Bullfinch	Grand Cayman Bullfinch Melopyrrha taylori is split from Cuban Bullfinch M. nigra based on differences in morphology and vocalizations (Garrido et al. 2014; del Hoyo & Collar 2016; HBW/BirdLife).
Ibera Seedeater	Sporophila iberaensis	ADD	NEW		Sp. nov.: Di Giacomo & Kopuchian, 2016. Recognition as specifically distinct supported by distinctive plumage and vocalizations, unique breeding habitat, and genomic data (Galluppi-Selich et al. 2018; Browne et al. 2021; Turbek et al. 2019; Turbek et al. 2021; SACC 953; HBW/BirdLife).
Streaked Dacnis	Xenodacnis petersi	ADD	AS	Peg-billed Finch	Streaked Dacnis Xenodacnis petersi (including bella) is split from Tit-like Dacnis X. parina based on morphology and voice (del Hoyo & Collar 2016; Boesman 2016; Hilty et al. 2022).
Carriker's Mountain Tanager	Dubusia carrikeri	ADD	AS	Rufous-bellied Mountain Tanager	Carriker's Mountain Tanager Dubusia carrikeri is splt from Buff-breasted Mountain Tanager D. taeniata on the basis of differences in plumage and vocalizations (Boesman 2016; del Hoyo & Collar 2016; HBW/BirdLife).
Streak-crowned Mountain Tanager	Dubusia stictocephala	ADD	AS	Buff-breasted Mountain Tanager	Streak-crowned Mountain Tanager Dubusia stictocephala is splt from Buff-breasted Mountain Tanager D. taeniata on the basis of differences in plumage and vocalizations (Boesman 2016; del Hoyo & Collar 2016; HBW/BirdLife).

Species Updates IOC Version 13.1

English Name	Scientific Name	Change	Code	List After Species	Source
White-throated Piping Guan	Pipile grayi	ADD	AS	Blue-throated Piping Guan	White-throated Piping Guan Pipile grayi is split from Blue-throated Piping Guan P. cumanensis on the basis of differences in plumage, the color and shape of the wattle, and limited hybridization in zones of contact in se Peru (del Hoyo & Collar 2014); HBW/BirdLife. See Vaurie 1967).
Western Crested Guineafowl	Guttera verreauxi	ADD	AS	Plumed Guineafowl	Western Crested Guineafowl Guttera verreauxi (including sclateri) is split from G. pucherani (s.s and s.l.) on the basis of differences in color of facial and neck skin, morphology of the hood, and vocalizations (del Hoyo & Collar 2014; HBW/BirdLife.
Southern Crested Guineafowl	Guttera edouardi	ADD	AS	Eastern Crested Guineafowl	Southern Crested Guineafowl Guttera edouardi (including barbata) is split from G. pucherani (s.s and s.l.) on the basis of differences in color of facial and neck skin, morphology of the hood, and vocalizations (del Hoyo & Collar 2014); HBW/BirdLife.
Bornean Crestless Fireback	Lophura pyronota	ADD	AS	Malayan Crestless Fireback	Bornean Crestless Fireback Lophura pyronota is split from Malayan Crestless Fireback L. erythrophthalma based on substantial differences in plumage (del Hoyo & Collar 2014; Eaton et al. 2021; HBW/BirdLife).
Malayan Crested Fireback	Lophura rufa	ADD	AS	Salvadori's Pheasant	Malayan Crested Fireback Lophura rufa is split from Bornean Crested Fireback L. ignita (including nobilis) based on substantial differences in plumage (del Hoyo & Collar 2014; Eaton et al. 2021; HBW/BirdLife). Treat as monotypic. Includes "macartneyi" of se Sumatra regarded as a hybrid swarm between ignita and rufa (Collar & Prŷs-Jones 2014; Eaton et al. 2021; McGowan et al. 2022; HBW/BirdLife).
Sabah Partridge	Tropicoperdix graydoni	ADD	AS	Chestnut-necklaced Partridge	Sabah Partridge Tropicoperdix graydoni is split from Tropicoperdix charltonii (including atjenensis) based on significant differences in plumage and soft part coloration (del Hoyo & Collar 2014, Eaton et al. 2021; HBW/BirdLife).
Whyte's Francolin	Scleroptila whytei	ADD	AS	Shelley's Francolin	Whyte's Francolin Scleroptila whytei is split from Shelley's Francolin Scleroptila shelleyi based on significant differences in plumage and mtDNA divergence (del Hoyo & Collar 2014; Mandiwana-Neudani et al. 2019b; HBW/BirdLife).
Black-fronted Spurfowl	Pternistis atrifrons	DEL	AL		Black-fronted Spurfowl Pternistis atrifons was originally split from Chestnut-naped Spurfowl P. castaneicollis (Töpfer et al. 2014), but it is treated as ssp. of P. castaneicollis by Redman et al. (2011), Mandiwana-Newdani et al. (2019), del Hoyo & Collar (2014) and HBW/BirdLife absent strong DNA divergence, similar vocalizations and minor differences in plumage.
Black-shouldered Nightjar	Caprimulgus nigriscapularis	DEL	AL		Black-shouldered Nightjar Caprimulgus nigriscapularis is treated as the northern subspecies of C. pectoralis based on similar vocalizations and lack of significant morphological differences (Louette 1990; Dowsett & Dowsett-Lemaire 1993; Zimmerman et al. 1996; Jackson 2013; Dickinson & Remsen 2013; HBW/BirdLife). Contra Fry et al. (1988); Cleere (1995, 1999); and Holyoak (2001).
Green Inca	Coeligena conradii	ADD	AS	Black Inca	Green Inca Coeligena conradii is split from Collared Inca C. torquata based on differences in plumage (del Hoyo & Collar 2014; Donegan et al. 2015; HBW/BLI).
Gould's Inca	Coeligena inca	ADD	AS	Collared Inca	Gould's Inca Coeligena inca (including omissa) is split from Collared Inca C. torquata based on differences in plumage and genetic differentiation (Schuchmann 1999; del Hoyo & Collar 2014; McGuire et al. 2014; HBW/BLI. Contra SACC 140).
Perija Starfrontlet	Coeligena consita	ADD	AS	Buff-winged Starfrontlet	Perija Starfrontlet Coeligena consita is split from C. bonapartei based on differences in plumage (del Hoyo & Collar 2014; Donegan et al. 2015; HBW/BirdLife).
Golden-tailed Starfrontlet	Coeligena eos	ADD	AS	Golden-bellied Starfrontlet	Golden-tailed Starfrontlet Coeligena eos is split from Golden-bellied Starfrontlet C. bonapartei based on differences in plumage (Schuchmann 1999; del Hoyo & Collar 2014; Donegan et al. 2015; HBW/BirdLife. Contra SACC 139).
Gould's Emerald	Riccordia elegans	DEL			The extinct Gould's Emerald Riccordia elegans, formerly included in this genus, is known solely from the unique type specimen of unknown geographic origin. It is regarded as a "taxon of uncertain status" by WGAC and is classified as a "doubtful taxon" by the AOS in NACC 2022-C-3. As such, it is tentatively deleted until, and if, genetic analysis and/or stable isotope analysis sheds further light on its status.
Copper-tailed Hummingbird	Saucerottia cupreicauda	ADD	AS	Green-bellied Hummingbird	Copper-tailed Hummingbird Saucerottia cupreicauda (including duidae, laireti, and pacaraimae) is split from Green-bellied Hummingbird Saucerottia viridigaster on the basis its distinctive coloration of the rump, uppertail coverts and rectrices (del Hoyo & Collar 2014; HBW/BirdLife).
Enggano Imperial Pigeon	Ducula oenothorax	ADD	AS	Green Imperial Pigeon	Enggano Imperial Pigeon Ducula oenothorax is split from Green Imperial Pigeon D. aenea on the basis of pronounced differences in plumage (Eaton et al. 2021; del Hoyo & Collar 2014; HBW/BLI).
African Woolly-necked Stork	Ciconia microscelis	ADD	AS	Abdim's Stork	Widely allopatric African Woolly-necked Stork Ciconia microscelis is split from Asian Woolly-necked Stork C. episcopus based on plumage and other morphological differences (del Hoyo & Collar 2014; HBW/BLI).
Principe Scops Owl	Otus bikegila	ADD	NEW	Cyprus Scops Owl	Sp. nov.: Melo et al. 2022. Principe Scops Owl Otus bikegila is a newly described species based on morphometrics, plumage, bioacoustics and molecular analysis.
Malayan Blue-banded Kingfisher	Alcedo peninsulae	ADD	AS	Cerulean Kingfisher	Malayan Blue-banded Kingfisher Alcedo peninsulae is split from Javan Blue-banded Kingfisher A. euryzona based on differences in plumage, especially female plumage (del Hoyo & Collar 2014; HBW/BirdLife. See Eaton et al. 2021).
Sangihe Dwarf Kingfisher	Ceyx sangirensis	ADD	AS	Philippine Dwarf Kingfisher	The critically endangered Sangihe Dwarf Kingfisher Ceyx sangirensis is split from Sulawesi Dwarf Kingfisher Ceyx fallax based on plumage and other morphological differences (del Hoyo & Collar 2014; HBW/BirdLife. See Eaton et al. 2021).
Malaita Dwarf Kingfisher	Ceyx malaitae	DEL	AL		Ceyx malaitae was split from Moluccan (Variable) Dwarf Kingfisher (Andersen et al. 2013) and previously treated as a separate monophyletic species, but it is more recently lumped with Ceyx nigromaxilla (del Hoyo & Collar 2014; HBW/BirdLife; Clements 2022). Despite the non-monophyly shown in the molecular study by Andersen et al. (2013), the two taxa demonstrate only minimal differences in plumage and occupy neighboring islands. The molecular study was based on only a single specimen of C. malaitae and non-monophyly requires confirmation.
Thick-billed Honeyguide	Indicator conirostris	DEL	AL		Thick-billed Honeyguide Indicator conirostris (including ussheri) is lumped with Lesser Honeyguide I. minor. The two species have identical voices, virtually identical plumage, and their presumed ecological separation has been questioned (del Hoyo & Collar 2014; HBW/BirdLife).
Sumba Eclectus	Eclectus cornelia	ADD	AS	Moluccan Eclectus (Electus Parrot)	Sumba Eclectus E. cornelia is split from Eclectus roratus based on larger size and substantial differences in female plumage, coupled with supporting molecular data (HBW/BirdLife; Braun et al. 2017).
Tanimbar Eclectus	Eclectus riedeli	ADD	AS	Sumba Eclectus	Tanimbar Eclectus E. riedeli is split from Eclectus roratus based on smaller size and substantial differences in female plumage, coupled with supporting molecular data (HBW/BirdLife; Braun et al. 2017).
Papuan Eclectus	Eclectus polychloros	ADD	AS	Tanimbar Eclectus	Papuan Eclectus E. polychloros (including solomonensis and macgillivrayi) is split from Eclectus roratus based on differences in plumage and molecular data (HBW/BirdLife; Braun et al. 2017). The nominate subspecies includes aruensis and biaki (Beehler & Pratt 2016).
Oceanic Eclectus ††	Eclectus infectus	ADD	NEW	Papuan Eclectus	The extinct Oceanic Eclectus Eclectus infectus is known primarily from late Holocene skeletal material and one crude contemporary drawing of a living bird rendered on Vava'u, Tonga in 1793 (Olson, 2006; Steadman, 2006; HBW/BirdLife).
Black-fronted Fig Parrot	Cyclopsitta nigrifrons	ADD	AS	Blue-fronted (Orange-breasted) Fig Parrot	Black-fronted Fig Parrot Cyclopsitta nigrifrons (including amabilis) is proposed split from the Orange-breasted Fig Parrot complex Cyclopsitta gulielmitertii s.l. based on significant differences in plumage and size (Schnitker 2007; Dickinson & Remsen 2013; del Hoyo & Collar 2016; HBW/BirdLife).
Dusky-cheeked Fig Parrot	Cyclopsitta melanogenia	ADD	AS	Black-fronted Fig Parrot	Dusky-cheeked Fig Parrot Cyclopsitta melanogenia (including ssp. suavissima, fuscifrons) is split from the Orange-breasted Fig Parrot complex Cyclopsitta gulielmitertii s.l. based on significant differences in plumage and size (Schnitker 2007, 2014; Dickinson & Remsen 2013; Mitchell et al. 2021; del Hoyo & Collar 2016; HBW/BirdLife).
Black-billed Hanging Parrot	Loriculus bonapartei	ADD	AS	Philippine Hanging Parrot	Black-billed Hanging Parrot Loriculus bonapartei is split from Philippine Hanging Parrot L. philippensis on the basis of differences in bill and leg color, and some differences in plumage (Allen 2020).
Choco Manakin	Cryptopipo litae	ADD	AS	Black Manakin	Choco Manakin Cryptopipo litae (including suffusa) is split from Green Manakin C. holochlora on the basis of differences in plumage and vocalizations (Ridgely & Tudor 1994; Ridgely & Greenfield 2001; del Hoyo & Collar 2016; Boesman 2016; HBW/BirdLife).
Black-breasted Gnateater	Conopophaga snethlageae	ADD	AS	Chestnut-belted Gnateater	Black-breasted Gnateater Conopophaga snethlageae (including pallida) is split from Chestnut-belted Gnateater C. aurita based on differences in plumage, vocalizations, and deep genetic divergence (Whitney 2003, Batalha-Filo et al. 2014, Boesman 2016, del Hoyo & Collar 2016; HBW/BirdLife).
Choco Elaenia	Myiopagis parambae	ADD	AS	Forest Elaenia	Choco Elaenia Myiopagis parambae (including absita) is split from Grey-headed Elaenia Myiopagis caniceps on the basis of differences in vocalizations, morphology and plumage supported by phylogenetic analysis (Rheindt et al. 2009; Cuervo et al. 2014; del Hoyo & Collar 2016; HBW/BirdLife).
Amazonian Elaenia	Myiopagis cinerea	ADD	AS	Choco Elaenia	Amazonian Elaenia Myiopagis cinerea is split from Grey-headed Elaenia Myiopagis caniceps on the basis of differences in vocalizations, morphology and plumage supported by phylogenetic analysis (Rheindt et al. 2009; Cuervo et al. 2014; del Hoyo & Collar 2016; HBW/BirdLife).
White-bellied Tyrannulet	Serpophaga munda	DEL	AL		White-bellied Tyrannulet Serpophaga munda is lumped with White-crested Tyrannulet S. subcristata based on essentially identical vocalizations despite differences in plumage (del Hoyo & Collar 2014; HBW/BirdLife).
Northern Mouse-colored Tyrannulet	Nesotriccus incomtus	ADD	AS	Straneck's Tyrannulet	Northern Mouse-colored Tyrannulet Nesotriccus incomtus (including eremonomus) is split from (Southern) Mouse-colored Tyrannulet N. murinus on the basis of phylogenetic analysis by resolving the paraphyly otherwise imposed by N. ridgwayi which is embedded in the N. murinus complex; and subtle differences in plumage (Zucker et al. 2016).
Maranon Tyrannulet	Nesotriccus maranonicus	ADD	AS	Tumbesian Tyrannulet	Monotypic Maranon Tyrannulet Nesotriccus maranonicus is split from Tumbesian Tyrannulet N. tumbezanus (including inflavus) based on phylogenetic analysis, plumage and vocalzations (Zucker et al. 2016).
Bahia Wagtail-Tyrant	Stigmatura bahiae	ADD	AS	Lesser Wagtail-Tyrant	Bahia Wagtail-Tyrant Stigmatura bahiae is split from Lesser Wagtail-Tyrant Stigmatura napensis based on paraphyly relative to Stigmatura budytoides supported by differences in plumage and voice (Harvey et al. 2020; del Hoyo & Collar 2016; HBW/BirdLife).
Olive-striped Flycatcher	Mionectes galbinus	ADD	AS	Olive-streaked Flycatcher	Mionectes galbinus (including hederaceus, venezuelensis and fasciaticollis) is split from monotypic M. olivaceus primarily on significant differences in song, bill structure and minor plumage differences (del Hoyo & Collar 2016; Boesman 2016; HBW/BirdLife). The English name Olive-striped Flycatcher is retained by the polytypic split form, and the restricted-range M. olivaceus becomes Olive-streaked Flycatcher. The songs in polytypic M. galbinus are quite variable. Further cryptic species may be involved (see Fitzpatrick et al. 2020).
Mouse-grey Flycatcher	Myiophobus crypterythrus	ADD	AS	Bran-colored Flycatcher	Mouse-grey Flycatcher Myiophobus crypterythrus is split from Bran-colored Flycatcher M. fasciatus based on significant differences in plumage and vocalizations (del Hoyo & Collar 2016; HBW/BirdLife).
Rufescent Flycatcher	Myiophobus rufescens	ADD	AS	Mouse-grey Flycatcher	Rufescent Flycatcher Myiophobus rufescens is split from Bran-colored Flycatcher M. fasciatus based on significant differences in plumage and vocalizations (del Hoyo & Collar 2016; HBW/BirdLife).
Northern Tropical Pewee	Contopus bogotensis	ADD	AS	Eastern Wood Pewee	Northern Tropical Pewee Contopus bogotensis (including brachytarsus, rhizophorus, aithalodes and surinamensis) is a split from (Southern) Tropical Pewee Contopus cinereus (including pallescens) based on differences in plumage and vocalizations which are further supported by phylogenetic analysis (del Hoyo & Collar 2016; HBW/BirdLife; Harvey et al. 2020).
Rufous-browed Chat-Tyrant	Ochthoeca superciliosa	ADD	AS	Brown-backed Chat-Tyrant	Rufous-browed Chat-Tyrant Ochthoeca superciliosa is split from Brown-backed Chat-Tyrant Ochthoeca fumicolor based on striking differences in plumage (del Hoyo & Collar 2016; HBW/BirdLife; see Ridgely & Tudor 1994).
Malawi Batis	Batis dimorpha	ADD	AS	Dark Batis	Malawi Batis Batis dimorpha (including sola) is split from Cape Batis Batis capensis on the basis of differences in plumage (del Hoyo & Collar 2016; HBW/BirdLife). Reported sympatry in s Malawi (Dowsett in litt).
Comoros Blue Vanga	Cyanolanius comorensis	ADD	AS	Chabert Vanga	Comoros Blue Vanga Cyanolanius comorensis (including bensoni) is split from (Madagascar) Blue Vanga C. madagascarinus on the basis of differences in plumage, size and bill length (del Hoyo & Collar 2016; HBW/BirdLife).
Northern Shriketit	Falcunculus whitei	ADD	AS	Crested Bellbird	Northern Shriketit Falcunculus whitei is a split from (Eastern) Shriketit F. frontatus based on plumage and vocalizations. (Schodde & Mason 1999; del Hoyo & Collar 2016; HBW/BirdLife).
Western Shriketit	Falcunculus leucogaster	ADD	AS	Northern Shriketit	Western Shriketit Falcunculus leucogaster is split from (Eastern) Shriketit F. frontatus based on plumage and vocalizations. (Schodde & Mason 1999; del Hoyo & Collar 2016; HBW/BirdLife).
Himalayan Shrike-babbler, Dalat Shrike-babbler	Pteruthius ripleyi, Pteruthius annamensis	DEL	AL		Himalayan Shrike-babbler Pteruthius ripleyi and Dalat Shrike-babbler P. annamensis were formerly split from Pied [White-browed] Shrike-babbler P. flaviscapis (Rheindt & Eaton 2009). But vocal evidence points to overlap, and a recent reassessment of the vocalizations by Boesman et al (2016) further suggests that the original split of the mainland taxa of White-browed Shrike-babbler may have been premature. Re-lump with Pteruthius aeralatus following del Hoyo & Collar (2016) and HBW/BirdLife.
Sharpe's Lark	Mirafra sharpii	ADD	AS	Rufous-naped Lark	Monotypic Sharpe's Lark Mirafra sharpii is split from Rufous-naped Lark M. africana on the basis of differences in plumage and morphology supported by unpublished data demonstrating deep genetic divergence (Redman et al. 2009; del Hoyo & Collar 2016; Alström & Donald 2022; HBW/BirdLife).
Singing Bush Lark	Mirafra cantillans	DEL	AL		Singing Bush Lark Mirafra cantillans (including marginata, chadensis, and simplex) is lumped with Horsfield's Bush Lark M. javanica on the basis of shallow genetic divergence, similar vocalizations, and convergent plumages (Alström et al. 2013, del Hoyo & Collar 2016; Alström & Ryan. 2022; HBW/BirdLife).
Sunda Bush Warbler	Horornis vulcanius	DEL	AL		Sunda Bush Warbler Horornis vulcanius (including sepiarius, flaviventris, kolichisi, everetti, banksi, oreophilus, and palawanus) is lumped with Aberrant Bush Warbler H. flavolivaceus in face of conflicting interpretation of genetic data (Olsson et al. 2006, Alström et al. 2011). Recognize a polytypic Aberrant Bush Warbler following del Hoyo & Collar (2016) and HBW/Birdlife pending further analysis of vocalizations and genomic data.
Rufous-crowned Prinia	Prinia khasiana	ADD	AS	Black-throated Prinia	Rufous-crowned Prinia Prinia khasiana is split from Black-throated Prinia P. atrogularis on the basis of marked differences in plumage, distinctive vocalizations, and genetic divergence (Rasmussen & Anderton 2012; del Hoyo & Collar 2016; Groot 2021; HBW/Birdlife).
Wangi-wangi White-eye	Zosterops paruhbesar	ADD	NEW	Plain White-eye	Wangi-wangi White-eye Zosterops paruhbesar is a newly described, single island endemic species: Irham et al. 2022, based on its significantly larger bill and body size than other regional white-eyes, and its genetic distinctiveness (O'Connell et al. 2019; Irham et al. 2022).
Brown-crowned Scimitar Babbler	Pomatorhinus phayrei	ADD	AS	Black-crowned Scimitar Babbler	Polytypic Brown-crowned Scimitar Babbler Pomatorhinus phayrei (five subspecies) is split from monotypic Black-crowned (Coral-billed) Scimitar-Babbler P. ferruginosus on the basis of plumage and vocalizations (Rasmussen & Anderton 2012; del Hoyo & Collar 2016; HBW/BirdLife).
Tenggara Hill Myna	Gracula venerata	ADD	AS	Common Hill Myna	Tenggara Hill Myna Gracula venerata is split from Common Hill Myna G. religiosa based on differences in the color the plumage gloss, the structure of the wattle and other areas of bare skin of the head, and very different vocalizations (del Hoyo & Collar 2016; Eaton et al. 2021; HBW/BirdLife).
Vinous-breasted Myna	Acridotheres leucocephalus	ADD	AS	Burmese Myna	Acridotheres leucocephalus Vinous-breasted Myna is split from Burmese Myna Acridotheres burmannicus based on plumage, bill size and color pattern and, possibly, iris color (del Hoyo & Collar 2016; HBW/BirdLife). The split species A. leucocephalus retains the English name Vinous-breasted Starling while the parent form becomes Burmese Starling.
Ethiopian Thrush	Turdus simensis	ADD	AS	Red-and-black Thrush	Ethiopian Thrush Turdus simensis is split from Groundscraper Thrush T. litsitsirupa based on deep genetic divergence and differences in plumage and vocalizations (Nylander et al. 2008; del Hoyo & Collar 2016; HBW/BirdLife).
Rufous-breasted Blue Flycatcher	Cyornis camarinensis	ADD	AS	Blue-breasted Blue Flycatcher	Rufous-breasted Blue Flycatcher Cyornis camarinensis is split from Blue-breasted Blue Flycatcher C. herioti based on its striking morphological differences (del Hoyo & Collar 2016; Allen 2020; HBW/BirdLife).
Tanahjampea Blue Flycatcher	Cyornis djampeanus	DEL	AL		Taxonomic status of "Tanahjampea Blue Flycatcher" C. djampeanus uncertain. Lumped with subspecies kalaoensis as Tanahjampea Blue Flycatcher by HBW/BirdLife. Given monotypic full species status by others (Eaton et al. 2016, 2021; del Hoyo et al. 2019) which was followed in IOC 12.2. Treated as a subspecies of Sulawesi Blue Flycatcher C. omissus following Gwee et al. (2019) and aligning with Clements (2022) in IOC 13.1 based on weak vocal differentiation and minor differences in morphology and plumage from C. omissus.
Kalao Blue Flycatcher	Cyornis kalaoensis	ADD	AS	Sulawesi Blue Flycatcher	Kalao Blue Flycatcher Cyornis kalaoensis is split from Mangrove Blue Flycatcher Cyornis rufigastra, and is further regarded as specifically distinct from "Tanahjampea Blue Flycatcher" C. djampeanus (as it is recognized by del Hoyo & Collar (2016) and currently by HBW/BLI), based on distinctive vocalizations and plumage that differ from both of those species (Gwee et al. 2019; Eaton et al. 2021).
Philippine Shortwing	Brachypteryx poliogyna	ADD	AS	Taiwan Shortwing	Philippine Shortwing Brachypteryx poliogyna is split from the White-browed Shortwing (B. montana s.l.) species complex based on striking differences in female plumage and vocalizations (Allen 2020; Eaton et al. 2021; del Hoyo & Collar 2016, HBW/BirdLife).
Bornean Shortwing	Brachypteryx erythrogyna	ADD	AS	Philippine Shortwing	Bornean Shortwing Brachypteryx erythrogyna is split from the White-browed Shortwing (B. montana s.l.) species complex based on striking differences in female plumage and vocalizations (Allen 2020; Eaton et al. 2021; del Hoyo & Collar 2016, HBW/BirdLife).
Sumatran Shortwing	Brachypteryx saturata	ADD	AS	Bornean Shortwing	Sumatran Shortwing Brachypteryx saturata is split from the White-browed Shortwing (B. montana s.l.) species complex based on striking differences in female plumage and vocalizations (Allen 2020; Eaton et al. 2021; del Hoyo & Collar 2016, HBW/BirdLife).
Javan Shortwing	Brachypteryx montana	ADD	AS	Sumatran Shortwing	Javan Shortwing Brachypteryx montana is split from the White-browed Shortwing (B. montana s.l.) species complex based on striking differences in female plumage and vocalizations (Allen 2020; Eaton et al. 2021; del Hoyo & Collar 2016, HBW/BirdLife).
Flores Shortwing	Brachypteryx floris	ADD	AS	Javan Shortwing	Flores Shortwing Brachypteryx floris is split from the White-browed Shortwing (B. montana s.l.) species complex based on striking differences in female plumage and vocalizations (Allen 2020; Eaton et al. 2021; del Hoyo & Collar 2016, HBW/BirdLife).
Izu Robin	Larvivora tanensis	ADD	AS	Japanese Robin	Izu Robin Larvivora tanensis is split from Japanese Robin Larvivora akahige based primarily on differences in vocalizations and habitat (Zhao et al. 2016; del Hoyo & Collar 2016; HBW/BirdLife).
Amber Mountain Rock Thrush	Monticola erythronotus	ADD	AS	Littoral Rock Thrush	Restore Amber Mountain Rock Thrush Monticola erythronotus as a full species based on its distinctive plumage following del Hoyo & Collar (2016) and HBW/BirdLife.
Rusty-breasted Wheatear	Oenanthe frenata	ADD	AS	Buff-breasted Wheatear	Rusty-breasted Wheatear Oenanthe frenata is split from Oenanthe bottae (renamed Buff-breasted Wheatear) based on differences in plumage (del Hoyo & Collar 2016; HBW/BirdLife).
Olive-naped Weaver	Ploceus brachypterus	ADD	AS	Spectacled Weaver	Olive-naped Weaver Ploceus brachypterus is split from Black-necked Weaver P. nigricollis based on differences in plumage and iris color (del Hoyo & Collar 2016; HBW/BirdLife).
Chestnut-and-black Weaver	Ploceus castaneofuscus	ADD	AS	Giant Weaver	Chestnut-and-black Weaver Ploceus castaneofuscus is split from Vieillot's Black Weaver Ploceus nigerrimus based on its distinctive plumage (del Hoyo & Collar 2016; HBW/BirdLife).
Red Weaver	Anaplectes jubaensis	ADD	AS	Red-headed Weaver	Red Weaver Anaplectes jubaensis is split from Red-headed Weaver A. rubriceps (including leuconotos) based on its distinctive plumage (del Hoyo & Collar 2016; HBW/BirdLife).
Red-cowled Widowbird	Euplectes laticauda	ADD	AS	Red-collared Widowbird	Red-cowled Widowbird Euplectes laticauda (including suahelicus) is split from Red-collared Widowbird E. ardens based on substantial differences in plumage and tail length of males in breeding plumage (del Hoyo & Collar 2016; HBW/BirdLife). Phylogenetic analysis also demonstrates relatively deep genetic divergence (de Silva et al. 2019).
Red-backed Mannikin	Spermestes nigriceps	DEL	AL		Red-backed Mannikin Spermestes nigriceps (including woltersi) is lumped with Black-and-white Mannikin S. bicolor. Earlier claims of parapatric distribution (Sibley & Monroe 1970) is disputed (Dowsett & Dowsett‐Lemaire 1993) and back color varies clinally from west to east (del Hoyo & Collar 2016; HBW/BirdLife).
Abyssinian Waxbill	Estrilda ochrogaster	DEL	AL		Abyssinian Waxbill Estrilda ochrogaster is lumped with Fawn-breasted Waxbill E. paludicola. Plumage characteristics that define this taxon are not significantly different from those of the nominate subspecies than other subspecies within this complex (del Hoyo & Collar 2016; HBW/BirdLife).
Landana Firefinch	Lagonosticta landanae	DEL	AL		Landana Firefinch Lagonosticta landanae is lumped with African Firefinch due to insignificant differences in plumage (Payne 2004; del Hoyo & Collar 2016; HBW/BirdLife.
White-bellied Tanager	Tangara brasiliensis	ADD	AS	Turquoise Tanager	The geographically isolated White-bellied Tanager Tangara brasiliensis is split from Turqoise Tanager T. mexicana based on its distinctive plumage and larger size (Ridgely & Tudor 2009; del Hoyo & Collar 2016; HBW/BirdLife).

Species Updates IOC Version 12.2

English Name	Scientific Name	Change	Code	List After Species	Source
Puerto Rican Mango	Anthracothorax aurulentus	ADD	AS	Hispaniolan Mango	Puerto Rican Mango Anthracothorax aurulentus is split from Hispaniolan (Antillean) Mango A. dominicus on the basis of differences in plumage commensurate with those between other species in the genus (NACC 2022-C-4; Chesser et al. 2022; HBW/BirdLife).
Long-tailed Sabrewing	Pampa excellens	DEL	AL	Curve-winged Sabrewing	Long-tailed Sabrewing Pampa excellens is lumped with Curve-winged Sabrewing Pampa curvipennis based on gene flow, similar vocalizations, and response to playback (NACC 2022-A-5; Chesser et al. 2022).
Tres Marias Hummingbird	Cynanthus lawrencei	ADD	AS	Broad-billed Hummingbird	Tres Marias Hummingird C. lawrencei is split from Broad-billed Hummingbird based on plumage differences comparable to those between other species in the genus (Hernández-Baños et al. 2020; del Hoyo et al. 2020; NACC 2022-A-20b; Chesser et al. 2022).
New Caledonian Storm Petrel	Fregetta lineata	ADD	NEW	Black-bellied Storm Petrel	New Caledonian Storm Petrel Fregetta lineata is recognized as a resurrected and redescribed species, distinct from the other taxa within Fregetta, based on biometrics and limited phylogenetic analysis (Cibois et al. 2015; Robertson et al. 2016; Bretagnolle et al. 2022).
MacGillivray's Prion	Pachyptila macgillivrayi	ADD	AS	Salvin's Prion	MacGillivray's Prion P. macgillivrayi is split from Salvin's Prion based on bill morphology and other more subtle morphological differences, supported by genetic analysis (HBW/BirdLife; Harrison et al. 2021; Masello et al. 2022)
Eastern Osprey	Pandion cristatus	DEL	AL	Osprey	Eastern Osprey Pandion cristatus is re-lumped with Western Osprey P. haliaetus as simply "Osprey" based on low genetic divergence, phylogenetic analysis, and absence of strong morphological differences (Monti et al. 2015; Monti et. al. 2018; HBW/BirdLife, Clements).
Archer's Buzzard	Buteo archeri	DEL	AL	Augur Buzzard	Buteo archeri was formerly treated as a distinct species, Archer's Buzzard (Thiollay 1994; Riesing et al. 2003). But it is now generally regarded either as a subspecies or a rufous morph of Augur Buzzard (Clark 1996; Clark 2003; Dickinson & Remsen 2013; HBW/BirdLife).
Tasmanian Boobook	Ninox leucopsis	ADD	AS	Alor Boobook	Tasmanian Boobook Ninox leucopsis is split from Morepork N. novaeseelandiae based on genetic and vocal divergence and morphometrics (König & Weick 2008; Dickinson & Remsen 2013; Gwee et al. 2017; HBW/BirdLife).
Usambara Eagle-Owl	Bubo vosseleri	DEL	AL	Fraser's Eagle-Owl	Usambara Eagle-Owl Bubo vosseleri was formerly treated as a monotypic species based on size and some differences in plumage from the nominate subspecies of Fraser's Eagle-Owl (König & Weick. 2008). But vocalizations are not appreciably different (Hunter et al. 1998; Dowsett-Lemaire 2006). Treated as a subspecies of B. poensis following HBW/BirdLife.
Pere David's Owl	Strix davidi	DEL	AL	Ural Owl	Pere David's Owl Strix davidi demonstrates broad plumage and vocal overlap with S. uralensis (Scherzinger 2004, Scherzinger et al. 2014). Treat as a subspecies of Ural Owl following HBW/BLI.
Velvety Manakin	Lepidothrix velutina	ADD	AS	Green Manakin	Transandean Velvety Manakin Lepidothrix velutina (including minuscula) is split from Blue-capped Manakin L. coronata based on significant phylogenetic and bioacoustic differences (Moncrieff et al. 2022; SACC 943).
Tagula Manucode	Manucodia alter	ADD	AS	Glossy-mantled Manucode	Tagula Manucode M. alter is split from Glossy-mantled Manucode M. ater based on strikingly different vocalizations and some morphological differences (Gregory 2017).
Chinese Cupwing	Pnoepyga mutica	DEL	AL	Scaly-breasted Cupwing	Chinese Cupwing Pnoepyga mutica was split provisionally from P. albiventer (Päckert et al. 2012) based on moderate divergence in mitochondrial DNA and vocalizations. But others have rejected the vocal distinctiveness (Boesman, 2016; HBW/BirdLife). Provisionally treat as a subspecies of P. albiventer pending further evidence.
African Reed Warbler	Acrocephalus baeticatus	DEL	AL	Common (Eurasian) Reed Warbler	African Reed Warbler Acrocephalus baeticatus (including ambiguus, minor, cinnamomeus, suahelicus, and hallae) is lumped with Eurasian Reed Warbler A. scirpaceus as Common Reed Warbler based on similarities in morphology (other than wing structure in the non-migratory, sub-Saharan African populations), vocalizations, habitat choice, and relatively recent genetic divergence (Dowsett-Lemaire & Dowsett 1987; Olsson et al. 2016; HBW/BirdLife).
Anjouan White-eye	Zosterops anjuanensis	ADD	AS	Seychelles White-eye	Anjouan White-eye Z. anjuanensis is split from Z. maderaspatanus based on molecular analysis (Warren et al. 2006; Clements).
Moheli White-eye	Zosterops comorensis	ADD	AS	Kirk's White-eye	Moheli White-eye Z. comorensis is split from Z. maderaspatanus based on molecular analysis (Warren et al. 2006; Clements).
Meratus White-eye	Zosterops meratusensis	ADD	NEW	Malagasy White-eye	Sp. nov.: Irham et al., 2021.
Kangean Tit-Babbler	Mixornis prillwitzi	ADD	AS	Grey-cheeked Tit-Babbler	Kangean Tit-Babbler Mixornis prillwitzi is split from M. flaicollis based on differences in plumage and vocalizations (Cros & Rheindt 2017; HBW/BirdLife). But see Eaton et al. (2021) who treat it as a subspecies of M. bornensis.
Meratus Blue Flycatcher	Cyornis kadayangensis	ADD	NEW	Dayak Blue Flycatcher	Sp. nov.: Irham et al. 2021.
Abbott's Sunbird	Cinnyris abbotti	DEL	AL	Souimanga Sunbird	Abbott's Sunbird Cinnyris abbotti (including buchenorum) is lumped with Souimanga Sunbird Cinnyris sovimanga based on molecular data that show it embedded within the latter species (Warren et al. 2003; Skerrett & Disley 2011; Hawkins et al. 2015; HBW/BirdLife).
Chihuahuan Meadowlark	Sturnella lilianae	ADD	AS	Eastern Meadowlark	Chihuahuan Meadowlark Sturnella lilianae (historically referred to as "Lillian's Meadowlark") is split from Eastern Meadowlark S. magna based on morphological, genomic and vocal differences (Lanyon 1995; Barker et al. 2008; Beam et al. 2021; HBW 16; Powell et al. 2014; NACC 2022-C-2; Chesser et al. 2022). Includes auropectoralis (Beam et al. 2021).
Inti Tanager	Heliothraupis oneilli	ADD	NEW	Black-goggled Tanager	Gen. nov., sp. nov.: Lane et al. 2021. Inti Tanager is a morphologically and phylogenetically unique species most closely related to Black-goggled Tanager (Lane et al. 2021; SACC 925).
Caqueta Seedeater	Sporophila murallae	DEL	AL	Wing-barred Seedeater	Caqueta Seedeater Sporophila murallae is lumped with S. americana based on recent re-evalulation demonstrating a broad overlap in plumage characteristics and significant reduction in the perceived geographical gap between their distributions (SACC 932).

IOC Version 12.1	(Jan 8, 2022)
English Name	Scientific Name	Change	Code	List After Species	Source
Elgon Francolin	Scleroptila elgonensis	ADD	AS	Moorland Francolin	Elgon Francolin Scleroptila elgonensis is split from Moorland Francolin S. psilolaema based on differences in vocalizations and plumage (Hunter et al. 2019; HBW/Birdlife; N. Redman in litt).
Wetar Scops Owl	Otus tempestatis	ADD	AS	Moluccan Scops Owl	Wetar Scops Owl Otus tempestatis is split from Otus magicus based on distinct vocalizations (Eaton et al. 2021; HBW/Birdlife).
Sangihe Lilac Kingfisher	Cittura sanghirensis	ADD	AS	Sulawesi Lilac Kingfisher	Cittura sanghirensis is split from Sulawesi Lilac Kingfisher C. cyanotis on the basis of plumage and other morphological differences, vocalizations, and genetic traits (Eaton et al. 2021; HBW/Birdlife).
Brown-breasted Kingfisher	Halcyon gularis	ADD	AS	White-throated Kingfisher	Brown-breasted Kingfisher Halcyon gularis is split from H. smyrnensis based on plumage and vocalizations (Collar 2011b; Allen 2020; HBW/Birdlife).
Rufous-crowned Bee-eater	Merops americanus	ADD	AS	Blue-throated Bee-eater	Rufous-crowned Bee-eater Merops americanus is split from M. viridis based on morphologic differences (Collar 2011b; Allen 2020; HBW/Birdlife).
Malabar Flameback	Chrysocolaptes socialis	ADD	AS	Greater Flameback	Chrysocolaptes socialis is split from Greater Flameback C. guttacristatus based on differences in plumage and vocalizations (Rasmussen & Anderton 2012; Abhirami et al. 2021).
Blue-backed Parrot	Tanygnathus everetti	ADD	AS	Blue-naped Parrot	Tanygnathus everetti (including duponti, freeri and burbidgii) is split from Azure-rumped Parrot T. sumatranus based on plumage, eye color and genetic divergence (Arndt et al. 2019; Eaton et al. 2021). Note that the English name Blue-backed Parrot follows the split species.
Fulvous-faced Scrub Tyrant	Euscarthmus fulviceps	ADD	AS	Fulvous-crowned Scrub Tyrant	Split monotypic Euscarthmus fulviceps from E. meloryphus based on vocal and plumage differences (Franz et al. 2020; SACC 898).
Huon Bowerbird	Amblyornis germanus	ADD	AS	MacGregor's Bowerbird	Huon Bowerbird Amblyornis germanus is split from A. macgregoriae based on distinctive bower construction and unpublished molecular differences (Beehler & Pratt 2016; Gregory 2017). Species epithet treated as a noun in apposition, thus invariable (Schodde & Bock 2016).
Bacan Myzomela	Myzomela batjanensis	ADD	AS	Sulawesi Myzomela	Bacan Myzomela M. batjanensis is split from Sulawesi Myzomela M. chloroptera based on substantial differences in plumage and voice (Eaton et al. 2021, HBW/Birdlife).
Indonesian Honeyeater	Lichmera limbata	DEL	AL		Indonesian Honeyeater Lichmera limbata is relumped with Brown Honeyeater L. indistincta based on indistinct plumage, vocalizations and genetics (Mees 2006; Dickinson & Christidis 2014; Eaton et al. 2021, BLI).
Louisiade Monarch	Symposiachrus melanopterus	ADD	AS	Black-chinned Monarch	Symposiachrus melanopterus is split from Spectacled Monarch S. trivirgatus based on morphological differences and phylogenetic analysis (McCullough et al. 2021).
Flores Leaf Warbler	Phylloscopus floresianus	ADD	AS	Negros Leaf Warbler	Phylloscopus floresianus is split from Timor Leaf Warbler P. presbytes on the basis of plumage and vocal differences. (Eaton et al. 2021)
Guadalcanal Thicketbird	Cincloramphus turipavae	ADD	AS	Tawny Grassbird	Guadalcanal Thicketbird C. turipavae is split from Melanesan (Santos) Thicketbird C. whitneyi based on morphological differences and allopatry (Dutson 2011, HBW/Birdlife).
Arabian Sunbird	Cinnyris hellmayri	ADD	AS	Palestine Sunbird	Arabian Sunbird Cinnyris hellmayri (including kinneari) is split from Shining Sunbird C. habessinicus on the basis of distinctive male and female plumages, larger size, and reportedly different vocalizations (Shirihai & Svensson 2018; HBW/Birdlife).
Ruvu Weaver	Ploceus holoxanthus	ADD	AS	Southern Brown-throated Weaver	Resurrect P. holoxanthus as a unique species after having been mistakenly synonymized with P. subaureus for years. But critical analysis shows consistent morphological differences, and it is substantially genetically distinct (Turner & Kennedy 2019; Fjeldså et al. 2020; Oschadleus et al. 2021).
Australian Zebra Finch	Taeniopygia castanotis	ADD	AS	Sunda Zebra Finch	Australian Zebra Finch T. castanotis is split from (Sunda) Zebra Finch T. guttata based on differences in plumage, moderate mtDNA divergence. and evidence of assortive mating in captivity (Payne 2010; Olsson & Alström 2020; Eaton et al. 2021; Clayton, 1990; HBW/Birdlife).
Arabian Accentor	Prunella fagani	DEL	AL		Arabian Accentor P. fagani is lumped with Radde's Accentor P. ocularis based on only minor differences in plumage, identical vocalizations, and insufficient genetic evidence to support a split. Treat as a non-migratory subspecies (Shirihai & Svensson 2018; Kirwan et al. 2021).
Chinese Long-tailed Rosefinch	Carpodacus lepidus	ADD	AS	(Siberian) Long-tailed Rosefinch	Carpodacus lepidus (including henrici) is split from C. sibricus based on genetic and plumage differences (Liu et al. 2020).
Masked Bunting	Emberiza personata	ADD	AS	Black-faced Bunting	Monotypic E. personata is split from E. spodocephala based on morphological and genetic differences (Weissensteiner et al. 2014; Päckert et al. 2015; Brazil 2018; HBW/Birdlife).

IOC Version 11.2 (July 10, 2021)
English Name	Scientific Name	Change	Code	List After Species	Source
Kai Coucal	Centropus spilopterus	ADD	AS	Black-billed Coucal	Kai Coucal Centropus spilopterus is reinstated as a split from Pheasant Coucal C. phasianinus based on its distinctive plumage and allopatric distribution (Eaton et al. 2021; HBW/Birdlife. But see Payne 2005; Collar 2007).
Philippine Collared Dove	Streptopelia dusumieri	ADD	AS	Sunda (Island) Collared Dove	Split Philippine Collared Dove Streptophila dusumieri from S. bitorquata based on vocal and plumage differences (Collar 2011b; Eaton et al. 2016; Allen 2020; HBW/Birdlife).
Burmese Collared Dove	Streptopelia xanthocycla	ADD	AS	Eurasian Collared Dove	Streptopelia xanthocycla is split from Streptopelia decaocto based on plumage, unique eye-ring color, song, and geographical isolation (HBW/Birdlife).
Ryukyu Green Pigeon	Treron permagnus	ADD	AS	White-bellied Green Pigeon	Treron permagnus (including medioximus) is split from Treron formosae (including filipinus) based on morphological differences (Brazil 2009; HBW/Birdlife).
Raiatea Fruit Dove	Ptilinopus chrysogaster	ADD	AS	Silver-capped Fruit Dove	Raiatea Fruit Dove Ptilinopus chrysogaster is split from Grey-green Fruit Dove P. purpuratus based on plumage differences and molecular data (Cibois et al. 2014; Thibault & Cibois 2017; HBW/Birdlife).
Geelvink Fruit Dove	Ptilinopus speciosus	ADD	AS	White-bibbed Fruit Dove	Geelvink Fruit Dove Ptilinopus speciosus is split from Yellow-bibbed Fruit Dove Ptilinopus solomonensis based on plumage and vocal differences (Gregory 2017; HBW/Birdlife).
Geelvink Imperial Pigeon	Ducula geelvinkiana	ADD	AS	Spice Imperial Pigeon	Geelvink Imperial Pigeon Ducula geelvinkiana is split from Spice Imperial Pigeon Ducula myristicivora based on vocal and morphological differences (Beehler & Pratt 2016; Gregory 2017; HBW/Birdlife).
Malabar Imperial Pigeon	Ducula cuprea	ADD	AS	Zoe's Imperial Pigeon	Malabar Imperial Pigeon Ducula cuprea is split from Mountain Imperial Pigeon Ducula badia based on differences in morphology and vocals (Niranjana & Praveen 2021; HBW/Birdlife).
New Caledonian Buttonquail	Turnix novaecaledoniae	ADD	AS	Painted Buttonquail	Extinct Turnix novaecaledoniae is split from Turnix varius based on morphological differences (Bahr 2011; HBW/Birdlife).
Short-billed Gull	Larus brachyrhynchus	ADD	AS	Common Gull	Larus brachyrhynchus is split from Larus canus based on vocal, morphological and genetic differences (NACC 2021-A-3; Chesser et al. 2021).
Guadalcanal Owl, Malaita Owl, Makira Owl	Athene granti, Athene malaitae, Athene roseoaxillaris	ADD	AS	West Solomons Owl	Splits from A. jacquinoti are based on plumage and bioacoustic differences (Dutson 2011; HBW/Birdlife).
Banggai Scops Owl	Otus mendeni	ADD	AS	Sulawesi Scops Owl	Banggai Scops Owl Otus mendeni is split from Sulawesi Scops Owl O. manadensis based on vocalizations (Eaton et al. 2016, 2021; HBW/Birdlife).
Ethiopian Bee-eater	Merops lafresnayii	ADD	AS	Blue-breasted Bee-eater	Ethiopian Bee-eater Merops lafresnayii is split from Blue-breasted Bee-eater M. variegatus based on morphological and vocal differences. Differs from the similarly sized M. oreobates by its different plumage and voice (Redman et al. 2016; Fry et al. 2020; HBW/Birdlife). See also Boesman (2017) re vocal differences.
African Green Bee-eater	Merops viridissimus	ADD	AS	Böhm's Bee-eater	Merops viridissimus (including cleopatra) is split from Asian Green Bee-eater Merops orientalis based on significant differences in morphology and voice (Fry et al. 2020; HBW/Birdlife).
Arabian Green Bee-eater	Merops cyanophrys	ADD	AS	African Green Bee-eater	Merops cyanophrys (including muscatensis) is split from Asian Green Bee-eater Merops orientalis based on significant differences in morphology and voice (Fry et al. 2020; HBW/Birdlife).
Usambiro Barbet	Trachyphonus usambiro	ADD	AS	D'Arnaud's Barbet	Trachyphonus usambiro is split from T. darnaudii based on plumage and vocal differences (Sibley & Monroe 1990; Stevenson & Fanshaw 2002; HBW/Birdlife).
Sumatran Woodpecker	Picus dedemi	ADD	AS	Grey-headed Woodpecker	Sumatran Woodpecker Picus dedemi is split from P. canus based on significant differences in plumage and voice (Eaton et al. 2021; HBW/Birdlife).
Southern Sooty Woodpecker	Mulleripicus fuliginosus	ADD	AS	Northern Sooty Woodpecker	Mulleripicus fuliginosus is split from M. funebris on the basis of structural and plumage differences and possible vocal differences (Collar 2011b; Allen 2020; HBW/Birdlife, Clements).
Comoros Black Parrot	Coracopsis sibilans	ADD	AS	Lesser Vasa Parrot	Comoros Black Parrot Coracopsis sibilans is split from Coracopsis nigra based on genetic divergence and significant vocal and size differences (Kundu et al. 2012; HBW/Birdlife).
Simeulue Parrot	Psittinus abbotti	ADD	AS	Blue-rumped Parrot	Simeulue Parrot Psittinus abbotti is split from P. cyanurus based on substantial structural and plumage differences (Eaton et al. 2016, 2021; HBW/Birdlife).
Stella's Lorikeet	Charmosyna stellae	ADD	AS	Papuan Lorikeet	Charmosyna stellae (including goliathina and wahnesi) is split from C. papou based on significant plumage differences supported by phylogenetic analysis (Beehler & Pratt 2016; Joseph et al. 2020).
Yellow-cheeked Lorikeet	Saudareos meyeri	ADD	AS	Sula (Citrine) Lorikeet	Split Saudareos meyeri from Sula (Citrine) Lorikeet S. flavoviridis based on morphological differences and genetic analyses (Eaton et al. 2016; Smith et al. 2020; Joseph et al. 2020). English name proposed here is preferred to the eponym Meyer's Lorikeet. Move from Trichoglossus to Saudareos gen. nov.: Joseph et al., 2020.
Sierra Nevada Antpitta	Grallaria spatiator	ADD	AS	Red-and-white Antpitta	Subspecies formerly attributed to Rufous Antpitta elevated to species based on vocalizations, plumage, and genetic analysis (Isler et al. 2020; Chesser et al. 2020). English name provisional pending SACC.
Perija Antpitta	Grallaria saltuensis	ADD	AS	Sierra Nevada Antpitta	Subspecies formerly attributed to Rufous Antpitta elevated to species based on vocalizations, plumage, and genetic analysis (Isler et al. 2020; Chesser et al. 2020).
Chami Antpitta	Grallaria alvarezi	ADD	NEW	Bicolored Antpitta	New species: Cuervo, Cadena, Isler & Chesser, 2020. Separated from other species in the "Rufous Antpitta" complex based on vocalizations, plumage, and genetic analysis (Isler et al. 2020; Chesser et al. 2020).
Equatorial Antpitta	Grallaria saturata	ADD	AS	Chami Antpitta	Subspecies formerly attributed to Rufous Antpitta resurrected and elevated to species based on vocalizations and genetic analysis (Isler et al. 2020; Chesser et al. 2020).
Cajamarca Antpitta	Grallaria cajamarcae	ADD	AS	Equatorial Antpitta	Subspecies formerly attributed to Rufous Antpitta elevated to species based on vocalizations, plumage, and genetic analysis (Isler et al. 2020; Chesser et al. 2020).
Chachapoya Antpitta	Grallaria gravesi	ADD	NEW	Chestnut Antpitta	New species: Isler, Chesser, Robbins & Hosner, 2020. Separated from other species in the "Rufous Antpitta" complex based on vocalizations, plumage, and genetic analysis (Isler et al. 2020; Chesser et al. 2020). English name provisional.
Panao Antpitta	Grallaria oneilli	ADD	NEW	Chachapoya Antpitta	New species: Chesser & Isler, 2020. Separated from other species in the "Rufous Antpitta" complex based on vocalizations, plumage, and genetic analysis (Isler et al. 2020; Chesser et al. 2020). English name provisional.
Junin Antpitta	Grallaria obscura	ADD	AS	Panao Antpitta	Subspecies formerly attributed to Rufous Antpitta elevated to species based on vocalizations, plumage, and genetic analysis (Isler et al. 2020; Chesser et al. 2020).
Oxapampa Antpitta	Grallaria centralis	ADD	NEW	Junin Antpitta	New species: Hosner, Robbins, Isler & Chesser, 2020. Separated from other species in the "Rufous Antpitta" complex based on vocalizations, plumage, and genetic analysis (Isler et al. 2020; Chesser et al. 2020).
Ayacucho Antpitta	Grallaria ayacuchensis	ADD	NEW	Oxapampa Antpitta	New species: Hosner, Robbins, Isler & Chesser, 2020. Separated from other species in the "Rufous Antpitta" complex based on vocalizations, plumage, and genetic analysis (Isler et al. 2020; Chesser et al. 2020).
Urubamba Antpitta	Grallaria occabambae	ADD	AS	Ayacucho Antpitta	Subspecies formerly attributed to Rufous Antpitta resurrected and elevated to species based on vocalizations and genetic analysis (Isler et al. 2020; Chesser et al. 2020).
Puno Antpitta	Grallaria sinaensis	ADD	NEW	Urubamba Antpitta	New species: Robbins, Isler, Chesser & Tobias, 2020. Separated from other species in the "Rufous Antpitta" complex based on vocalizations, plumage, and genetic analysis (Isler et al. 2020; Chesser et al. 2020).
Bolivian Antpitta	Grallaria cochabambae	ADD	AS	Puno Antpitta	Subspecies formerly attributed to Rufous Antpitta elevated to species based on vocalizations, plumage, and genetic analysis (Isler et al. 2020; Chesser et al. 2020).
Moluccan Myzomela	Myzomela simplex	ADD	AS	Ruby-throated Myzomela	Moluccan Myzomela Myzomela simplex (including mortyana) is split from Dusky Myzomela M. obscura based on differences in plumage, size and DNA (Eaton et al. 2021; HBW/Birdlfe).
Red-tinged Myzomela	Myzomela rubrotincta	ADD	AS	Moluccan Myzomela	Red-tinged Myzomela Myzomela rubrotincta is split from Dusky Myzomela M. obscura based on differences in plumage, size and DNA (Eaton et al. 2016, 2021; HBW/Birdlfe).
Biak Myzomela	Myzomela rubrobrunnea	ADD	AS	Red-tinged Myzomela	Biak Myzomela Myzomela rubrobrunnea is split from Dusky Myzomela M. obscura based on significant morphological differences (Gregory 2017; HBW/Birdlfe).
Reddish Myzomela	Myzomela erythrina	ADD	AS	Red Myzomela	Reddish Myzomela Myzomela erythrina (including lavongai, cantans, vinacea) is split from Red Myzomela based on differences in morphology and elevation (Gregory 2017; HBW/Birdlife).
Long-billed Myzomela	Myzomela longirostris	ADD	AS	Red-collared Myzomela	Long-billed Myzomela Myzomela longirostris is split from M. rosenbergii based on morphometric differences and distinctive female plumage (Beehler & Pratt 2016; Gregory 2017; HBW/Birdlife).
Rennell Gerygone	Gerygone citrina	ADD	AS	Fan-tailed Gerygone	Rennell Gerygone Gerygone citrina is split from G. flavolateralis based on differences in plumage and eye color, and biogeography (Dutson 2011; HBW/Birdlife).
Satin Berrypecker	Melanocharis citreola	ADD	NEW	Streaked Berrypecker	New species: Milá, Bruxaux, Friis, Sam, Ashari & Thébaud, 2021. Recently described from the Kumawa Mountains in West Papua.
Spotted Berrypecker	Rhamphocharis piperata	ADD	AS	Thick-billed (formerly Spotted) Berrypecker R. crassirostris	Rhamphocharis piperata is split from R. crassirostris based on morphometric and plumage differences (Beehler & Pratt 2016; Gregory 2017; HBW/Birdlife). English name Spotted Berrypecker is assigned to the split species to reflect its female plumage.
Western Crested Berrypecker	Paramythia olivacea	ADD	AS	Tit Berrypecker	Western Crested Berrypecker Paramythia olivacea is split from Eastern Crested Berrypecker P. montium based on morphological differences (Beehler & Pratt 2016; Gregory 2017; HBW/Birdlife).
West African Batis	Batis occulta	ADD	AS	Ituri Batis	West African Batis Batis occulta is split from Batis poensis based on differences in plumage and size (Sinclair & Ryan 2003; Clements; HBW/Birdlife).
Biak Triller	Lalage leucoptera	ADD	AS	Black-browed Triller	Biak Triller Lalage leucoptera is split from L. atrovirens based on differences in plumage and voice (Beehler & Pratt 2016; Gregory 2017; HBW/Birdlife).
Giant Grey Shrike	Lanius giganteus	ADD	AS	Iberian Grey Shrike	Giant Grey Shrike Lanius giganteus is split from Chinese Grey Shrike Lanius sphenocercus on the basis of strong morphological divergence including where ranges approach; parapatry; habitat differences; and genetic divergence (Svensson et al. 2009; Olsson et al. 2010; Panov et al. 2011; Dickinson & Christidis 2014, Fuchs et al. 2021).
Wetar Oriole	Oriolus finschi	ADD	AS	Timor (Olive-brown) Oriole	Wetar Oriole Oriolus finschi is split from O. melanotis based on strong genetic divergence (6.3%) and substantial vocal and plumage differences (Eaton et al. 2016; Jønsson et al. 2019; HBW/Birdlife).
Biak Fantail	Rhipidura kordensis	ADD	AS	Northern Fantail	Rhipidura kordensis is split from Northern Fantail Rhipidura rufiventris on the basis of vocal and plumage differences (Gregory 2017; HBW/Birdlife).
Tenggara Paradise Flycatcher	Terpsiphone floris	ADD	AS	Blyth's Paradise Flycatcher	Terpsiphone floris is split from T. affinis based on bioacoustic and morphological differences and phylogenetic divergence (Anderson et al. 2015; Eaton et al. 2016). Includes ssp. sumbaensis.
Tanimbar Monarch	Carterornis castus	ADD	AS	White-naped Monarch	Carterornis castus is split from C. pileatus based on structural, plumage, and bioacoustic differences (King 1997; Eaton et al. 2016, 2021; HBW/Birdlife; Clements). The English name Tanimbar Monarch is prefered over Loetoe Monarch following HBW/Birdlife and Eaton et al. (2016).
Velvet Flycatcher	Myiagra eichhorni	ADD	AS	Mussau (formerly Velvet) Flycatcher.	Myiagra eichhorni is split from M. hebetior based on morphometric differences, strikingly different female plumage. and vocalizations (Dutson 2011; Gregory 2017; HBW/Birdlife). This form, with the largest distribution, takes the English name Velvet Flycatcher.
Dyaul Flycatcher	Myiagra cervinicolor	ADD	AS	Velvet Flycatcher (M. eichhorni).	Myiagra cervinicolor is split from M. hebetior based on morphometrics, strikingly different female plumage, and vocalizations (Gregory 2017; HBW/Birdlife).
Bornean Black Magpie	Platysmurus aterrimus	ADD	AS	Malayan Black Magpie	Bornean Black Magpie Platysmurus aterrimus is split from P. leucopterus based on substantial plumage and vocal differences (Eaton et al. 2016; BLI/HBW).
Small Crow	Corvus samarensis	ADD	AS	Slender-billed Crow	Small Crow Corvus samarensis (including sierramadrensis) is split from C. enca based on significant vocal and morphological differences. See Allen (2020).
Palawan Crow	Corvus pusillus	ADD	AS	Small Crow	Palawan Crow Corvus pusillus is split from C. enca based on plumage, bill morphology, and major vocal differences (Allen 2020).
Obi Paradise-crow	Lycocorax obiensis	ADD	AS	Halmahera Paradise-crow	Obi Paradise-crow Lycocorax obiensis is split from L. pyrrhopterus based on pronounced vocal and plumage differences (Eaton et al. 2016; HBW/Birdlife).
Black-capped Robin	Heteromyias armiti	ADD	AS	Ashy Robin	Black-capped Robin Heteromyias armiti (including rothschildi) is split from H. albispecularis based on differences in genetics, plumage and vocalizations (Christidis et al. 2011; Beehler & Pratt 2016; Gregory 2017; HBW/Birdlife).
Arabian Lark	Eremalauda eremodites	ADD	AS	Dunn's Lark	Arabian Lark Eremalauda eremodites is split from Eremalauda dunni based on differences in size, small but consistent differences in plumage, and reported deep genetic divergence (Shirihai & Svensson 2018; HBW/Birdlife).
Sumatran Bulbul	Ixos sumatranus	ADD	AS	Yellow-browed Bulbul	Sumatran Bulbul Ixos sumatranus is split from Javan (Sunda) Bulbul I. virescens based on pronounced plumage and vocal differences (Eaton et al. 2016, 2021).
Camiguin Bulbul	Hypsipetes catarmanensis	ADD	AS	Yellowish Bulbul	Camiguin Bulbul is split from Hypsipetes everetti based on vocal and plumage differences (Allen 2020; HBW/Birdlife).
Siberian House Martin	Delichon lagopodum	ADD	AS	Common House Martin	Siberian House Martin Delichon lagopodum is split from D. urbicum based on morphological and vocal differences and syntopic nesting (Leader et al. 2021).
Alpine Leaf Warbler	Phylloscopus occisinensis	DEL	AL		Phylloscopus occisinensis is relumped with P. affinis based on bioacoustic, morphological and genomic data (Zhang et al. 2019). Treat as a subspecies.
Sulawesi Leaf Warbler	Phylloscopus nesophilus	ADD	AS	Makira Leaf Warbler	Split "Sulawesi Leaf Warbler" into Lompobattang Leaf Warbler Phylloscopus sarasinorum and Sulawesi Leaf Warbler Phylloscopus nesophilus based on bioacoustic and morphological differences. Note that the new English name follows the more range restricted taxon which carries the scientific name of the formerly combined species. The more widespread form P. nesophilus retains the English name of "Sulawesi Leaf Warbler" (Berryman & Eaton 2020).
Kilombero Cisticola	Cisticola bakerorum	ADD	NEW	Chubb's Cisticola	Newly described species: Fjeldså et al., 2021.
White-tailed Cisticola	Cisticola anderseni	ADD	NEW	Coastal Cisticola	Newly described species: Fjeldså et al., 2021.
Delicate Prinia	Prinia lepida	ADD	AS	Graceful Prinia	Delicate Prinia Prinia lepida (including akyildizi, carpenteri, lepida [including irakensis], and stevensi) is split from P. gracilis based on differences in morphometrics, plumage, and vocalizations, and mtDNA divergence (Alström et al. 2021).
Brown-tailed Apalis	Apalis flavocincta	ADD	AS	Rudd's Apalis	Brown-tailed Apalis A. flavocincta (including viridiceps) is split from Yellow-breasted Apalis A. flavida based on habitat, plumage and vocal differences (Sibley & Monroe 1990; HBW/Birdlife, Borrow pers. comm., Redman pers. comm.).
Calabarzon Babbler	Sterrhoptilus affinis	ADD	AS	Golden-crowned Babbler	Calabarzon Babbler Sterrhoptilus affinis is split from S. nigrocapitatus based on substantial phylogenetic divergence and paraphyly, as well as consistent plumage differences (Hosner et al. 2018).
Black-fronted White-eye	Zosterops chrysolaemus	ADD	AS	Green-fronted White-eye	Split from Z. minor based on distinct morphological differences (Beehler & Pratt 2016; Gregory 2017). With the split of Zosterops chrysolaemus from Z. minor, the English name Black-fronted White-eye is reassigned to this taxon.
Oya Tabu White-eye	Zosterops crookshanki	ADD	AS	Capped White-eye	Split from Capped White-eye based on morphological and vocal differences (Beehler & Pratt 2016; Gregory 2017).
Bougainville White-eye	Zosterops hamlini	ADD	AS	Biak White-eye	Split from Grey-throated White-eye based on phylogenetic divergence and morphological differences (Moyle et al. 2009; Gregory 2017).
Guadalcanal White-eye	Zosterops oblitus	ADD	AS	Bougainville White-eye	Split from Grey-throated White-eye based on deep genetic divergence (Manthey et al. 2020).
Grey-hooded Babbler	Cyanoderma bicolor	ADD	AS	Chestnut-winged Babbler	Grey-hooded Babbler Cyanoderma bicolor (including rufum) is split from C. erythropterum based on plumage, bioacoustics and phylogenetic divergence (Eaton et al. 2016; HBW/Birdlife, Cros et al. 2020).
Sunda Scimitar Babbler	Pomatorhinus bornensis	ADD	AS	Sri Lanka Scimitar Babbler	Sunda Scimitar Babbler Pomatorhinus bornensis (including occidentalis) is split from Javan (Chestnut-backed) Scimitar Babbler P. montanus based on substantial vocal differences and fairly distinct plumages (Eaton et al. 2016, 2021).
Malayan Black-capped Babbler	Pellorneum nigrocapitatum	ADD	AS	Marsh Babbler	Pellorneum nigrocapitatum is split from Javan Black-capped Babbler P. capistratum based on genome-wide data and bioacoustics (Puan et al. 2020; Eaton et al. 2021).
Bornean Black-capped Babbler	Pellorneum capistratoides	ADD	AS	Javan Black-capped Babbler	P. capistratoides (including morrelli) is split from Javan Black-capped Babbler P. capistratum based on genome-wide data and bioacoustics (Puan et al. 2020; Eaton et al. 2021).
Tanzanian Illadopsis	Illadopsis distans	ADD	AS	Pale-breasted Illadopsis	Illadopsis distans is split from I. rufipennis based on morphological and bioacoustic differences (Zimmerman et al. 1996; Sinclair & Ryan 2003; Nguembock et al. 2009; HBW/BirdLife). Treat as monotypic. Includes puguensis (Collar & Robson 2007).
Palawan Fairy-bluebird	Irena tweeddalii	ADD	AS	Asian Fairy-bluebird	Palawan Fairy-bluebird Irena tweeddalii is split from Asian Fairy-bluebird I. puella based on phylogenetic divergence and morphometric and plumage differences (Moltesen et al. 2012; Allen 2020; HBW/BLI).
White-browed Gnatcatcher	Polioptila bilineata	ADD	AS	Yucatan Gnatcatcher	Polioptila bilineata (including brodkorbi, superciliaris, cinericia and daguae) is spit from Tropical Gnatcatcher P. plumbea based on morphology and genetic data (Smith et al. 2018; Chesser et al. 2021).
Bahama Nuthatch	Sitta insularis	ADD	AS	Brown-headed Nuthatch	Sitta insularis is split from Brown-headed Nuthatch S. pusilla based on differences in vocalizations and differential response to playback (Hayes et al. 2004; Boesman & Collar 2020; NACC 2021-C-14; Chesser et al. 2021).
Siamese Pied Myna	Gracupica floweri	ADD	AS	Indian Pied Myna	Gracupica floweri is split from Indian Pied Myna G. contra based on genetic divergence and morphological features (Baveja et al. 2020).
Javan Pied Myna	Gracupica jalla	ADD	AS	Siamese Pied Myna	Gracupica jalla is split from Indian Pied Myna G. contra based on genetic divergence and morphological features (Baveja et al. 2020).
Visayan Rhabdornis	Rhabdornis rabori	ADD	AS	Stripe-breasted Rhabdornis	Visayan Rhabdornis is split from R. inornatus based on plumage and structural differences (Collar 2011b; Allen 2020; HBW/Birdlife; Clements).
Taiwan Thrush	Turdus niveiceps	ADD	AS	Yemen Thrush	Usually treated as a subspecies of Turdus poliocephalus, but the sexually dimorphic niveiceps is not a member of the Island Thrush complex (Nylander et al. 2008; Fjeldså et al. 2020).
Visayan Shama	Copsychus superciliaris	ADD	AS	White-browed Shama	Visayan Shama is split from White-browed Shama based on genetic and plumage differences (Lim et al. 2010; Sánchez-González et al. 2015, Collar 2011b; HBW/BLI; Allen 2020).
Dayak Blue Flycatcher	Cyornis montanus	ADD	AS	Javan Blue Flycatcher	A Borneo endemic, the Dayak Blue Flycatcher is split from Javan Blue Flycatcher based on vocal, plumage and morphometric traits (Eaton et al. 2016; Gwee et al. 2019).
Sumba Jungle Flycatcher	Cyornis stresemanni	ADD	AS	Flores (Russet-backed) Jungle Flycatcher	Sumba Jungle Flycatcher is split from Flores (Russet-backed) Jungle Flycatcher Cyornis oscillans based on plumage, structural and vocal differences (Eaton et al. 2016, 2021; HBW/Birdlife).
Crocker Jungle Flycatcher	Cyornis ruficrissa	ADD	AS	Grey-chested Jungle Flycatcher	Split of Borneo subspecies of Cyornis rufocauda as Crocker Jungle Flycatcher C. ruficrissa (including isola) based on bioacoustic differences and differences in coloration (Gwee et al. 2019; Eaton et al. 2016, 2021).
Sulu Jungle Flycatcher	Cyornis ocularis	ADD	AS	Crocker Jungle Flycatcher	Sulu Jungle Flycatcher Cyornis ocularis is split from Cyornis ruficauda based on vocalizations and distinctive eye-ring color (Gwee et al. 2019; Allen 2020).
Chinese Vivid Niltava	Niltava oatesi	ADD	AS	Rufous-vented Niltava	Chinese Vivid Niltava Niltava oatesi is split from N. vivida based on size, plumage, and bioacoustic differences (Rasmussen & Anderton 2005, 2012; Boesman in HBW, HBW/Birdlife).
Short-tailed Akalat	Sheppardia poensis	ADD	AS	Forest Robin	Sheppardia poensis (including granti, kungwensisis, kaboboensis and schoutedeni) is split from Bocage's Akalat Sheppardia bocagei based on significant bioacoustic, morphological, and habitat differences (Prigogine 1987; Borrow & Demey 2001; HBW/Birdlife).
Okinawa Robin	Larvivora namiyei	ADD	AS	Ryukyu Robin	Okinawa Robin is split from L. komadori based on deep genetic divergence coupled with bioacoustic and morphological differences (Saitoh et al. 2015; Brazil 2018; HBW/BirdLife).
Ryukyu Flycatcher	Ficedula owstoni	ADD	AS	Narcissus Flycatcher	Ficedula owstoni is split from F. narcissina based on genetic and bioacoustic differences (Leader et al. 2013; Dong et al. 2015; Saitoh et al. 2015). Treat as monotypic following Ornithological Society of Japan (2000). Includes ssp. shonis and jakuschima.
Atlas Wheatear	Oenanthe seebohmi	ADD	AS	Northern Wheatear	Atlas Wheatear Oenanthe seebohmi is split from O. oenanthe based on striking differences in plumage and some bioacoustic differences (Shirihai & Svensson 2018; HBW/Birdlife).
Maghreb Wheatear	Oenanthe halophila	ADD	AS	Finsch's Wheatear	Oenanthe halophila is split from Mourning Wheatear O. lugens based on allopatric distribution and strong sexual dimorphism (Shirihai & Svensson 2018).
Basalt Wheatear	Oenanthe warriae	ADD	AS	Mourning Wheatear	Oenanthe warriae is split from Mourning Wheatear O. lugens based on unique habitat and lack of mixing, and distinctive plumage (Shirihai & Svensson 2018).
Blue-winged Leafbird	Chloropsis moluccensis	ADD	AS	Lesser Green Leafbird	Split "Blue-winged Leafbird" into Javan Leafbird Chloropsis cochinchinensis and Blue-winged Leafbird Chloropsis moluccensis (including chlorocephala, kinneari, auropectus, serithai, and viridinucha) based on plumage and deep mtDNA divergence (HBW/BLI; Moltesen et al. 2012; Eaton et al. 2016). Note that the new English name "Javan Leafbird" follows the more range-restricted taxon which carries the scientific name of the formerly combined species. The more widespread form C. moluccensis retains the English name of "Blue-winged Leafbird".
Greyish-crowned Leafbird	Chloropsis lazulina	ADD	AS	Orange-bellied Leafbird	Chloropsis lazulina (including melliana) is split from C. hardwickii based on phylogenetic divergence and plumage differences (Moltesen et al. 2012; HBW/BLI).
Flame-crowned Flowerpecker	Dicaeum kampalili	ADD	AS	Yellow-crowned Flowerpecker	Dicaeum kampalili (including masawan) is split from D. anthonyi based on plumage differences. English name Flame-crowned Flowerpecker follows the split species (HBW/BLI; Allen 2020).
Grey-chinned Sunbird	Anthreptes tephrolaemus	ADD	AS	Yellow-chinned Sunbird	Anthreptes tephrolaemus is split from Anthreptes rectirostris based on differences in plumage and very different calls (HBW/Birdlife; Borrow in litt.). Note that the English name Grey-chinned Sunbird follows the split species.
Stripe-breasted Seedeater	Crithagra striatipectus	ADD	AS	Brimstone Canary	Stripe-breasted Seedeater Crithagra striatipectus is split from Crithagra reichardi based on consistent differences in plumage (Turner 2013; Dickinson & Christidis 2014; Turner & Pearson 2015; Stevenson & Fanshawe 2020; Redman pers. comm.; HBW/Birdlife). Species epithet is invariable.
Mindanao Serin	Chrysocorythus mindanensis	ADD	AS	Indonesian (Mountain) Serin	Chrysocorythus mindanensis is split from C. estherae based on significant plumage and structural differences (HBW/Birdlife; Eaton et al. 2016, 2021; Allen 2020).
West Mexican Euphonia	Euphonia godmani	ADD	AS	Trinidad Euphonia	Euphonia godmani is split from Scrub Euphonia E. affinis based on vocalizations, plumage and genetics (Vázquez-López et al. 2020; NACC 2021-C-9; Chesser et al. 2021).
Chestnut-capped Warbler	Basileuterus delattrii	ADD	AS	Rufous-capped Warbler	Chestnut-capped Warbler B. delattrii, recognized in IOC 1.0, but formerly lumped to align with AOU treatment. Vocally and ecologically distinct. Intergradation between B. r. salvini and B. (r.) delattrii reported by Monroe (1968) not documented and contested (Howell & Webb 1995; Navarro-Sigüenza comments; Demko et al. 2020). Re-split B. delattrii (including mesochrysus and actuosus) from B. rufifrons (Demko & Mennill 2019; Demko et al. 2020; NACC 2021-B-8, Chesser et al. 2021).
Cinnamon-bellied Saltator	Saltator grandis	ADD	AS	Green-winged Saltator	Saltator grandis is split from Blue-grey (Greyish) Saltator Saltator coerulescens based on vocal and genetic differences. Includes ssp. vigorsii, plumbiceps, yucatanensis, hesperis and brevicaudus (Chaves et al. 2013; SACC 879). English name provisional pending SACC.
Olivaceous Saltator	Saltator olivascens	ADD	AS	Cinnamon-bellied Saltator	Saltator olivascens is split from Blue-grey (Greyish) Saltator Saltator coerulescens based on vocal and genetic differences. Includes ssp. plumbeus and brewsteri (Chaves et al. 2013; SACC 879). English name provisional pending SACC.
St. Kitts Bullfinch	Melopyrrha grandis	ADD	AS	Puerto Rican Bullfinch	The extinct St. Kitts Bullfinch Melopyrrha grandis is split from M. portoricensis based on morphological differences (Garrido & Wiley 2003; NACC 2021-C-13; Chesser et al. 2021).
IOC Version 11.1 (January 20, 2021)
English Name	Scientific Name	Change	Code	List After Species	Source
Yungas Guan	Penelope bridgesi	ADD	AS	Dusky-legged Guan	Yungas Guan is split from Dusky-legged Guan Penelope obscura based on strong allopatry and biometric differences (Evangelista-Vargas & Silveira 2018; SACC 875).
Vaurie's Nightjar	Caprimulgus centralasicus	DEL	AL		Synonymize with European Nightjar Caprimulgus europaeus plumipes (Schweizer et al. 2020; Kirwan & Schweizer 2020).
Mato Grosso Swift	Chaetura viridipennis	DEL	AL		Treat as a subspecies of Chapman's Swift C. chapmani (Chesser et al. 2018; SACC 841).
Ashy-tailed Swift	Chaetura andrei	ADD	AS	Chapman's Swift	Split from Vaux's Swift C. vauxi (Chesser et al. 2018; SACC 841).
Diamantina Sabrewing	Campylopterus diamantinensis	ADD	AS	Outcrop Sabrewing	Split from Grey-breasted Sabrewing Campylopterus largipennis (Lopes et al. 2017; SACC 755). English name adopted from SACC 855.
Magellanic Snipe	Gallinago magellanica	ADD	AS	South American Snipe	Magellanic Snipe Gallinago magellanica is split from G. paraguaiae (Miller et al. 2019; SACC 843). English name provisional.
Annobon Scops Owl	Otus feae	ADD	AS	African Scops Owl	Annobon Scops Owl is split from African Scops Owl O. senegalensis based on morpholoigcal and vocal differences (Jones & Tye 2006; Collar & Boesman 2020).
Arabian Eagle-Owl	Bubo milesi	ADD	AS	Cape Eagle-Owl	Bubo milesi is split from Spotted Eagle-Owl B. africanus based on morphological and acoustic differences (Collar & Boesman 2019).
Northern Crested Caracara	Caracara cheriway	DEL	AL		Lumped with C. plancus based on short genetic distance and indiscriminately mixed plumage characters in their area of overlap (SACC 878).
Ornate Pitta	Pitta concinna	ADD	AS	Ivory-breasted Pitta	Pitta concinna is split from Elegant Pitta P. elegans based on bioacustic and plumage differences. (Yue et al. 2020).
Banda Sea Pitta	Pitta vigorsii	ADD	AS	Elegant Pitta	Pitta vigorsii is split from Elegant Pitta P. elegans based on bioacustic and plumage differences. (Yue et al. 2020).
Chinchipe Spinetail	Synallaxis chinchipensis	ADD	AS	Great Spinetail	Synallaxis chinchipensis is split from Necklaced Spinetail S. stictothorax based on vocal, genetic, and morphologic differences (Stopiglia et al. 2020; SACC 882; SACC 895).
Layard's Woodcreeper	Lepidocolaptes layardi	DEL	AL		Treat Lepidocolaptes layardi as a subspecies of Rondonia Woodcreeper L. fuscicapillus (Boesman 2016; SACC 868). English name of merged species tentative.
Northern Rufous-winged Antwren	Herpsilochmus frater	ADD	AS	Yellow-breasted Antwren	H. frater is split from H. rufimarginatus (Southern Rufous-winged Antwren). English names tentative. Includes ssp. exiguus (SACC 870).
Utcubamba Tapaculo	Scytalopus intermedius	ADD	AS	Blackish Tapaculo	Split from Blackish Tapaculo S. latrans to which it is only distantly related. Genetically sister to Large-footed Tapaculo S. macropus (Cadena et al. 2020; SACC 858).
Jalca Tapaculo	Scytalopus frankeae	ADD	NEW	Neblina Tapaculo	Krabbe et al. 2020; SACC 853.
White-winged Tapaculo	Scytalopus krabbei	ADD	NEW	Jalca Tapaculo	Krabbe et al., 2020; SACC 852.
Loja Tapaculo	Scytalopus androstictus	ADD	AS	Paramo Tapaculo	Scytalopus androstictus is split from S. opacus (Krabbe et al. 2020; SACC 855).
Ampay Tapaculo	Scytalopus whitneyi	ADD	NEW	Loja Tapaculo	Krabbe et al., 2020; SACC 854.
Turkestan Short-toed Lark	Alaudala heinei	ADD	AS	Mediterranean (Lesser) Short-toed Lark	Alaudala heinei is split from A. rufescens. Includes aharonii, pseudobaetica and persica (Alstrom et al. 2020).
Annam Limestone Babbler	Gypsophila annamensis	ADD	AS	Streaked Wren-Babbler	Split from Limestone Wren-Babbler G. crispifrons based on phylogenetic and bioacustic differences (Gwee et al. 2020).
Rufous Limestone Babbler	Gypsophila calcicola	ADD	AS	Annam Limestone Babbler	Split from Limestone Wren-Babbler G. crispifrons based on phylogenetic and bioacustic differences (Gwee et al. 2020).
Sumatran Blue Robin	Myiomela sumatrana	ADD	AS	White-tailed Robin	Myiomela sumatrana is split from Javan Blue (Sunda) Robin M. diana (Ng et al. 2020).
Taiwan Bullfinch	Pyrrhula owstoni	ADD	AS	Grey-headed Bullfinch	Pyrrhula owstoni is split from P. erythaca based on phylogenetic, morphological, and vocal differences (Dong et al. 2020).
Bonin Greenfinch	Chloris kittlitzi	ADD	AS	Grey-capped Greenfinch	Chloris kittlitzi is split from Chloris sinica based on deep genetic divergence and morphological differences (Saitoh et al. 2015; Saitoh et al. 2020).
Yungas Sparrow	Rhynchospiza dabbenei	ADD	AS	Tumbes Sparrow	Yungas Sparrow Rhynchospiza dabbenei is split from Stripe-capped (Chaco) Sparrow Rhynchospiza strigiceps (Areta et al. 2019; SACC 842).
Moss-backed Sparrow	Arremon dorbignii	ADD	AS	Half-collared Sparrow	A. dorbignii is split from Saffron-billed Sparrow A. flavirostris based on phylogenetic analysis and plumage and vocal differences (Bouainain et al. 2016; SACC 874).
IOC Version 10.2 (July 25, 2020)
English Name	Scientific Name	Change	Code	List After Species	Source
Malaysian Crested Argus	Rheinardia nigrescens	ADD	AS	(Vietnamese) Crested Argus	Split based on plumage, crest morphology and color, and vocals Davison et al. (2020).
White-faced Plover	Charadrius dealbatus	ADD	AS	Kentish Plover	Resurrect species status for White-faced Plover, Charadrius dealbatus, split from Charadrius alexandrinus (Kennerley et al. 2008; Sadanandan et al. 2019; Wang et al. 2019)
Tawny Piculet	Picumnus fulvescens	DEL	AL		Synonymize with Ochraceous Piculet Picumnus limae. Lima et al. (2020); SACC 845.
Fine-banded Woodpecker	Campethera taeniolaema	ADD	AS	Tullberg's Woodpecker	Split from Campethera tullbergi. Includes ssp. hausburgi. (Fuchs et al. 2017).
Western Fire-eye	Pyriglena maura	ADD	AS	Bare-crowned Antbird.	Spit from Pyriglena leuconota. (Isler & Maldonado-Coelho 2017, SACC 759)
Tapajos Fire-eye	Pyriglena similis	ADD	AS	Western Fire-eye	Spit from Pyriglena leuconota. (Isler & Maldonado-Coelho 2017, SACC 759)
Opalton Grasswren	Amytornis rowleyi	ADD	AS	Striated Grasswren	Split Amytornis rowleyi from A. striatus (Christidis et al. 2013; Black et al. 2020 a, b). English name Opalton Grasswren follows Black et al. (2020 a, b). Assigned the English name Rusty Grasswren by others (Christidis et al. 2013; Dickinson & Christidis 2014).
Rufous Grasswren	Amytornis whitei	ADD	AS	Opalton Grasswren	Split polytypic Amytornis whitei from A. striatus (Christidis et al. 2013; Black et al. 2020 a, b). English name of this polytypic species follows Black et al. (2020 a, b). Includes whitei, oweni, and newly described parvus and aenigma.
Taliabu Myzomela	Myzomela wahe	ADD	NEW	Banda Myzomela	Newly described species: Rheindt et al., 2020.
Palawan Drongo	Dicrurus palawanensis	ADD	AS	Paradise Drongo	D. palawanensis is split from D. hottentottus. Includes cuyensis (Shakya et al. 2020).
Peleng Fantail	Rhipidura habibiei	ADD	NEW	Sulawesi Fantail	Newly described species: Rheindt et al., 2020.
Northwestern Crow	Corvus caurinus	DEL	AL		Formerly treated as a distinctive species, but no longer treated as such because of clinal variation, lack of reproductive isolation, and lack of consistent differences in size, ecology, and vocalizations. Instead, here merged with American Crow Corvus brachyrhynchos as a subspecies (Slager et al. 2020; 2020-C-15; Chesser et al. 2020). See Subspecies Updates.
Solomons Robin	Petroica polymorpha	ADD	AS	Flame Robin	Split from Pacific Robin Petroica pusilla. Includes septentrionalis, kulambangrae, dennisi, and polymorpha. (Kearns et al. 2015; Kearns et al. 2020). Kearns et al. (2015) act as first reviser in applying polymorpha Mayr, 1934 as the species rank epithet.
Yellow-eyed Bristlebill	Bleda ugandae	ADD	AS	Yellow-lored Bristlebill	Split from Bleda notatus. (Huntley & Voelker 2016)
Grey-cheeked Bulbul	Alophoixus tephrogenys	ADD	AS	Palawan Bulbul	Alophoixus tephrogenys, including ssp. gutturalis, is split from A. bres (Fuchs et sl. 2015; Shakya et al. 2020). English name Grey-cheeked Bulbul is retained by A. tephrogenys (del Hoyo et al. 2020).
Penan Bulbul	Alophoixus ruficrissus	ADD	AS	White-throated Bulbul	Penan Bulbul Alophoixus ruficrissus, including ssp. meratusensis and fowleri. is split from Ochraceous Bulbul (Fuchs et al. 2015; del Hoyo et al. 2020; Shakya et al. 2020).
Pale-faced Bulbul	Pycnonotus leucops	ADD	AS	Orange-spotted Bulbul	Monotypic Pale-faced Bulbul is split from Flavescent Bulbul Pycnonotus flavescens. Genetically more closely related to P. bimaculatus and P. snouckaerti (Dejtaradol et al. 2016; Eaton et al. 2016).
Seram Bush Warbler	Locustella musculus	ADD	AS	Sulawesi (Chestnut-backed) Bush Warbler	Split from Sulawesi (Chestnut-backed) Bush Warbler (Eaton et al. 2016; Rheindt et al. 2020).
Taliabu Bush Warbler	Locustella portenta	ADD	NEW	Seram Bush Warber	Newly described species in the Chestnut-backed Bush Warbler complex: Rheindt et al., 2020.
Buru Bush Warbler	Locustella disturbans	ADD	AS	Taliabu Bush Warbler	Split from Sulawesi (Chestnut-backed) Bush Warbler (Eaton et al. 2016; Rheindt et al. 2020).
Western Subalpine Warbler	Curruca iberiae	ADD	AS	Sardinian Warbler	Western Subalpine Warbler is split from (Eastern) Subalpine Warbler C. cantillans following Zuccon et al. (2020) and Svensson (2013ab). The specific epithet is established as C. iberiae rather than C. inornata as the latter has been shown to be a junior synonym of C. subalpina (Zuccon et al 2020). Tentatively treat as monotypic, but the resident population of nw Africa (formerly inornata) is likely an unnamed subspecies (Svensson in litt).
IOC Version 10.1 (Jan 25, 2020)
English Name	Scientific Name	Change	Code	List After Species	Source
Hoogerwerf's Pheasant	Lophura hoogerwerfi	SSP	AL	Salvadori's Pheasant L. inornata	Overdue lump (10.1) of poorly known 'Hoogerwerf's Pheasant originally based on minor differences between females; males indistinguishable (Sözer et al. 2006, HBW, Eaton et al. 2016). Treat as SSP
Hudsonian Whimbrel	Numenius hudsonicus	ADD	AS	(Eurasian) Whimbrel N. phaeopus	Genomic phylogeography separates Nearctic whimbrels as a deep monophyletic clade with distinct plumage (Sangster et al. 2011, Tan et al. 2019). Similar vocals need study. ENG?
West African Crested Tern	Thalasseus albididorsalis	ADD	AS	Lesser Crested Tern T. bengalensis	Split from Royal Tern, T. maximus. Genetic analysis supports sister relation of T. m. albididorsalis to T. bengalensis not Royal Tern T. maximus (Collinson et al. 2017). Elevation to species status would remove paraphyly. NACC 2020-A-9. ENG
Sunda Owlet	Glaucidium sylvaticum	ADD	AS	Collared Owlet G. brodiei	Split (10.1) Sunda Owlet (G. sylvaticum) from Collared Owlet (G. brodiei; Gwee et al. 2019) largely on the basis of the primary song type, which is shared by Sumatran sylvaticum and Bornean borneense but distinctly different from that shared by the widespread continental nominate and Taiwanese pardalotum.
Maghreb Owl	Strix mauritanica	ADD	AS	Tawny Owl S. aluco	Split (10.1) based on morphology, genetics and vocals (Brito 2005, Doña et al. 2015, Robb 2015)
Butterfly Coquette	Lophornis verreauxii	ADD	AS	Festive Coquette L. chalybeus	Split (10.1) of Amazonian subspeicies verreauxii and klagesi from the broadly allopatric E Brazilian chalybeus based on different morphology, especially crest length, and vocal differences (del Hoyo and Collar 2014, Donegan et al. 2015, del Hoyo et al. 2019, SACC 833) ENG?
Alor Myzomela	Myzomela prawiradilagae	ADD	NEW	Crimson-hooded Myzomela M. kuehni	New species closely related to M. kuehni, first reported by Trainor et al. (2012a,b) and formally described to science on the basis of a single specimen (Irham et al. 2019). Head color, song and call differ; genetic divergence weak.
Cryptic Honeyeater	Microptilotis imitatrix	ADD	AS	Graceful Honeyeater M. gracilis	Split (10.1) of allopatric imitatrix based on vocal repertoire differences and playback responses supplemented by genetic and morphology differences incl. eye color (Nielsen 2018).
Spectacled Flowerpecker	Dicaeum dayakorum	ADD	NEW	Scarlet-breasted Flowerpecker Prionochilus thoracicus	Distinctive new species informally documented by sightings and photographs (Edwards et al. 2009, Sykes and Loseby 2015, Boyd et al. 2016) and now described scientifically from the sole known specimen (Saucier et al. 2019). Basal Dicaeum.
Swinhoe's Prinia	Prinia striata	ADD	AS	Himalayan [Striated] Prinia P. crinigera	Split (10.1) based on non-sister status, vocal and morphological differences, and previously unrecognized sympatry in Yunnan (Alström et al. 2019).
Burmese Prinia	Prinia cooki	ADD	AS	Deignan's [Brown] Prinia P. polychroa	Split from P. polychroa based on genetic, song, and morphological differences (Alström et al. 2019).
Annam Prinia	Prinia rocki	ADD	AS	Burmese Prinia P. cooki	Split from P. polychroa based on genetic, song, and morphological differences (Alström et al. 2019).
Numfor Leaf Warbler	Phylloscopus maforensis	ADD	AS	Island Leaf Warbler P. poliocephalus	Morphologically distinct; genetics desired (Beehler & Pratt 2016, HBW). Alström et al. 2018b sampled subspecies pallescens from Kolombangara I (w Solomons). Restore poliocephalus
Biak Leaf Warbler	Phylloscopus misoriensis	ADD	AS	Numfor Leaf Warbler	Morphologically distinct; genetics desired (Beehler & Pratt 2016, HBW); not sampled by Alström et al. 2018
Deignan's Babbler	Stachyridopsis rodolphei	DEL	AL	Rufous-fronted Babbler S. rufifrons	Variant of Rufous-fronted Babbler with no known population (Collar 2006a)
Eastern Black-eared Wheatear	Oenanthe melanoleuca	ADD	AS	[Western] Black-eared Wheatear O. hispanica	Split of Eastern Black-eared Wheatear (O. melanoleuca) from Western addresses genetic paraphyly in this species complex (Aliabadian et al. 2012, Schweizer et al. 2019, Jirle for Swedish Taxonomic Committee). Black-eared Wheatear O. hispanica currently includes two subspecies (hispanica, melanoleuca). But melanoleuca is sister to M. cypriaca and hybridizes with O. pleschanka in northern Iran. Hispanica is sister to that species clade.
IOC Version 9.2 (June 22, 2019)
English Name	Scientific Name	Change	Code	List After Species	Source
Stejneger's Scoter	Melanitta stejnegeri	ADD	AS	White-winged Scoter M. deglandi	Split (9.2) of Stejneger's Scoter M. stejnegeri from White-winged Scoter M. deglandi based on lack of hybridization and on morphological characters that include the black rather than brown flanks (deglandi also has brown tinged scapulars), a more obvious hook "nose" on stejnegeri, a longer white post-ocular mark on stejnegeri, and different bill coloration (HBW, NACC 2019-A-16 and references therein).
Australian Tern	Gelochelidon macrotarsa	ADD	AS	Gull-billed Tern G. nilotica	Split of G. macrotarsa is based on morphological differences (Rogers et al. 2005, HBW, Schodde pers. comm).
Malagasy Palm Swift	Cypsiurus gracilis	ADD	AS	African Palm Swift C. parvus	Split of Malagasy Palm Swift from African Palm Swift (C. parvus) based on vocalizations and plumage coloration (Mills et al. 2019). Includes griveaudi on Comoro Is.
Schouteden’s Swift	Schoutedenapus schoutedeni	DEL	AL	Scarce Swift S. myioptilus	Deemed to be darker juvenile or sub-adult Scarce Swifts subspecies chapini (Fishpool 2019)
Green-headed Hillstar	Oreotrochilus stolzmanni	ADD	AS	Andean Hillstar O. estella	Green-headed Hillstar is split from O. estella based on plumage differences and mtDNA relationship to O. melanogaster (McGuire et al. 2014, Rodríguez and Bonaccorso 2016, Fjeldså and Boesman 2018, SACC 808).
Blue-throated Hillstar	Oreotrochilus cyanolaemus	ADD	NEW	Green-headed Hillstar O. stolzmanni	Newly described species based on striking plumage differences from Andean Hillstar O. (estella) stolzmanni (Somoza-Molina et al 2018). Genomic analysis of estella species complex desired (see HBW, SACC 808)
Indochinese Roller	Coracias affinis	ADD	AS	Indian Roller C. benghalensis	Morphologically distinct Indochinese Roller is sister to Purple-winged Roller (C. temmincki) not to Indian Roller despite narrow hybrid zone (Johansson et al. 2018, HBW)
Barbary Falcon	Falco pelegrinoides	SSP	AL	Peregrine Falcon F. peregrinus	Barbary Falcon (including subspecies babylonicus) is genetically similar to other subspecies of Peregrine Falcon and treated thus (White et al. 2013, H&M4, Fuchs et al. 2015, Wink 2015, HBW Alive).
Negro Stipple-throated Antwren	Epinecrophylla pyrrhonota	SSP	AL	[Napo] Stipple-throated Antwren Epinecrophylla haematonota	Negro Stipple-throated Antwren was split from [Napo] Stipple-throated Antwren (Whitney et al. 2013e, SACC 589A), but vocalizations are identical and morphological differences slight (Isler and Whitney 2018, SACC 817).
Yasuni Antwren	Epinecrophylla fjeldsaai	SSP	AL	[Napo] Stipple-throated Antwren Epinecrophylla haematonota	Yasuni Stipple-throated Antwren was split from [Napo] Stipple-throated Antwren (Whitney et al. 2013e, SACC 589A), but vocalizations are identical and morphological differences slight (Isler and Whitney 2018, SACC 817).
Small-headed Elaenia	Elaenia sordida	ADD	AS	Highland Elaenia E. obscura	Elaenia sordida is split (9.2) from Highland Elaenia based on mtDNA genetics and vocals (Rheindt et al. 2008, Minns 2017, HBW, SACC 806). ENG Small-headed Elaenia follows SACC.
Ceara? Woodcreeper	Xiphorhynchus atlanticus	ADD	AS	Lesser Woodcreeper X. fuscus	Split of monotypic Ceara? Woodcreeper is based on genetic, morphological and vocal distinctions (Cabanne et al. 2014, Garcia et al. 2017, SACC 659, 809, HBW). ENG: Ceara?
Biak Whistler	Pachycephala [Colluricincla] melanorhyncha	ADD	AS, TAX, ENG	Little Shrikethrush C. megarhyncha	The endemic Biak Little ‘Shrikethrush’ C. m. melanorhyncha is a whistler, sister to Pachycephala phaionota (Marki et al. 2018). Elevated from ssp Colluricincla to species of Pachycephala. Rename
Little Shrikethrush spp	Colluricincla spp	ADD	AS		The following splits (9.2) of subspecies groups of the [Arafura] Little Shrikethrush species complex are based on genetics and morphology (Marki et al. 2018, Schodde pers. comm).
Variable Shrikethrush	Colluricincla fortis	ADD	AS	Arafura [Little] Shrikethrush C. megarhyncha	Split (9.2) of Variable Shrikethrush includes ssp trobriandi and despecta (with neos and superflua)
Waigeo Shrikethrush	Colluricincla affinis	ADD	AS	Variable Shrikethrush C. fortis	Split Waigeo Shrikethrush is monotypic
Mamberamo Shrikethrush	Colluricincla obscura	ADD	AS	Waigeo Shrikethrush C. affinis	Split (9.2) of Mamberamo Shrikethrush includes ssp hybridus
Tagula Shrikethrush	Colluricincla discolor	ADD	AS	Mamberamo Shrikethrush C. obscura	Split (9.2) monotypic Tagula Shrikethrush
Sepik-Ramu Shrikethrush	Colluricincla tappenbecki	ADD	AS	Tagula Shrikethrush C. discolor	Split (9.2) of Sepik-Ramu Shrikethrush C. tappenbecki includes ssp madaraszi and maeandrina.
Rufous Shrikethrush	Colluricincla rufogaster	ADD	AS	Sepik-Ramu Shrikethrush C. tappenbecki	Split (9.2) of Rufous Shrikethrush includes ssp griseata and goodsoni. Ssp aelptes and normani are included in goodsoni; gouldii and synaptica are included in nominate rufogaster.
Hill Blue Flycatcher	Cyornis whitei	ADD	AS, ENG	Javan [Hill] Blue Flycatcher C. banyumas	C. whitei is split (9.2) from C. banyumas based on genetics and vocalizations (Zhang et al. 2016, Gwee et al. 2019 . Includes subspecies lekhakuni, deignani, coerulifrons. Note transfer of established English name Hill Blue Flycatcher to C. whitei.
Indochinese Blue Flycatcher	Cyornis sumatrensis	ADD	AS	Tickell's Blue Flycatcher C. tickelliae	Widespread Indochinese Blue Flycatcher is split (9.2) from Tickell’s Blue Flycatcher based on morphology and vocalizations. Includes sumatrensis, indochina, lamprus. (Rasmussen & Anderton 2005, Gwee et al. 2019, HBW)
Cream-eyed Bulbul	Pycnonotus pseudosimplex	ADD	NEW	Cream-vented Bulbul P. simplex	Genetically distinct cream-eyed morph of Ashy-fronted Bulbul P. simplex on Borneo is sister instead to P. cinereifrons of Palawan (Shakya et al. 2019).
Morotai White-eye	Zosterops dehaani	ADD	AS	Cream-throated White-eye Z. atriceps	Split of Morotai White-eye Z. dehaani from Cream-throated White-eye is based on distinct plumage, exceptional dawn song and submontane/montane ecology (Rheindt and Eaton 2018)
Wakatobi White-eye	Zosterops flavissimus	ADD	AS	Lemon-bellied White-eye Z. chloris	Split of Wakatobi White-eye is based on morphology, genetics, and vocalizations (O’Connell et al. 2019)
Campina Thrush	Turdus arthuri	ADD	AS	Black-billed Thrush T. ignobilis	Split (9.2) of Campina Thrush T. arthuri from Black-billed Thrush T. ignobilis is based on sympatry without intergradation at two Colombian localities (Cerqueira et al. 2016, Avendaño et al. 2017, Stiles and Avendaño 2019, SACC 814).
Pantepui Thrush	Turdus murinus	ADD	AS	Campina Thrush T. arthuri	Pantepui Thrush is split (9.2) from Black-billed Thrush T. ignobilis based on genetic divergence (Cerqueira et al. 2016, Avendaño et al. 2017, Stiles and Avendaño 2019, SACC 814).
Yucatan Gnatcatcher	Polioptila albiventris	ADD	AS	White-lored Gnatcatcher P. albiloris	Split (9.2) of Yucatan Gnatcatcher P. albiventris from White-lored Gnatcatcher is based on genetic and vocal distinctions (Smith et al 2018; NACC 2019-C-7, E-6a).
Nicholson's Pipit	Anthus nicholsoni	ADD	AS	Long-billed Pipit A. similis	Split (9.2) of South African pops of Long-billed Pipit is based on their allopatric distributions (southern and East African populations separated by ca. 1 800 km), their non-migratory nature and their high cyt b sequence divergence values (Pietersen et al. 2018). Includes palliditinctus, leucocraspedon, petricolus, and primarius.


IOC Version 9.1 (Jan 20, 2019)
English Name	Scientific Name	Change	Code	List After Species	Source
Chaco Nothura	Nothura chacoensis	DEL	AL	Spotted Nothura N. maculosa	Treat Chaco Nothura as a subspecies of N. maculosa based on distributional, morphological, biochemical, and especially vocalization data; N. maculosa has priority (Hayes et al. 2018, SACC 782)
Rote Boobook	Ninox rotiensis	ADD	AS	Australian [Southern] Boobook N. boobook	Split from Australian [Southern] Boobook N. boobook based on genetics and vocals (Gwee et al. 2017)
Timor Boobook	Ninox fusca	ADD	AS	Rote Boobook N. rotiensis	Split from Australian [Southern] Boobook N. boobook based on genetics and vocals (Gwee et al. 2017)
Alor Boobook	Ninox plesseni	ADD	AS	Timor Boobook N. fusca	Split from Australian [Southern] Boobook N. boobook based on genetics and vocals (Gwee et al. 2017)
Buru Boobook	Ninox hantu	ADD	AS	Seram (Hantu) Boobook	Split of Buru Boobook from unrelated Seram Boobook based on genetics and vocals (Gwee et al 2017). ENG Rename N. squamipila
Green-backed Hillstar	Urochroa leucura	ADD	AS	Rufous-gaped [White-tailed] Hillstar U. bougueri	Green-backed Hillstar is split from White-tailed Hillstar, renamed Rufous-gaped Hillstar (HBW Alive, Donegan et al. 2015; SACC 775). SACC ENG 800 pending
Dry-forest Sabrewing	Campylopterus calcirupicola	ADD	NEW	Grey-breasted Sabrewing C. largipennis	Dry-forest Sabrewing is a newly described member of the Campylopterus largipennis species complex (Lopes et al. 2017). SACC 755, 756 and HBW accept with species status. ENG Limestone Sabrewing?
Chiriqui Foliage-gleaner	Automolus exsertus	ADD	AS	Buff-throated Foliage-gleaner A. ochrolaemus	Chiriqui Foliage-gleaner is split from widespread Buff-throated Foliage-gleaner based on vocals (incl. playback expts), and mtDNA divergence (Freeman and Montgomery 2017, NACC 2018-A-2)
Rufous-breasted Antpitta	Grallaricula leymebambae	ADD	AS	Rusty-breasted Antpitta G. ferrugineipectus	Van Doren et al. 2018, SACC 784
Tapajos Antpitta	Myrmothera subcanescens	ADD	AS	Thrush-like Antpitta M. campanisona	Carneiro et al. 2018; SACC 785
Spotted Scrubwren	Sericornis maculatus	ADD	AS	Large Scrubwren S. nouhuysi	Spotted Scrubwren is split from S. frontalis clade in comprehensive revision of relationships (Norman et al. 2018)
Erlanger's Lark	Calandrella erlangeri	DEL	SSP	Blanford’s Lark C. blanfordi	Treat Erlanger’s Lark as a subspecies of Blanford’s Lark (Stervander et al 2016)
Rufous-capped Lark	Calandrella eremica	ADD	AS	Blanford's Lark C. blanfordi	Split Rufous-capped Lark from Blanford’s Lark; includes daaroodensis (Stervander et al. 2016)
Albertine Sooty Boubou	Laniarius holomelas	ADD	AS	Mountain Sooty Boubou L. poensis	Proposed split supported by eye color, vocals and preliminary DNA evidence (Voelker et al. 2010, H&M4, HBW).
Steppe Grey Shrike	Lanius pallidirostris	DEL	AL	Great Grey Shrike L. excubitor	Lanius pallidirostris is split from Lanius excubitor (King 1997, Hernández et al. 2004, Panov 2011) but not by HBW, Clements, H&M4. Restore to status as subspecies of excubitor pending full resolution of this complex
Chivi Vireo	Vireo chivi	ADD	AS	Red-eyed Vireo V. olivaceus	Chivi Vireo is split from Red-eyed Vireo based on lack of introgression and not monophyletic (Battey and Klicka 2017, NACC 2018-B-4)
Western Square-tailed Drongo	Dicrurus occidentalis	ADD	NEW	[Common] Square-tailed Drongo D. ludwigii	Western Square-tailed Drongo is a new species embedded in D. ludwigii and sister to newly split Sharpe’s Drongo (Fuchs et al. 2018). ENG
Sharpe's Drongo	Dicrurus sharpei	ADD	AS	'Western' Square-tailed Drongo D. occidentalis	Sharpe’s Drongo (including elgonensis synonym) is split (9.1) from Square-tailed Drongo D. ludwigii based on plumage color and genetic lineage (Fuchs et al. 2017, 2018). ENG
Fanti Drongo	Dicrurus atactus	ADD	AS	Velvet-mantled Drongo D. modestus	Fanti Drongo is split (9.1) from Velvet-mantled Drongo D. modestus/coracinus following Fuchs et al. (2017)
Glossy-backed Drongo	Dicrurus divaricatus	ADD	AS	Fork-tailed Drongo D. adsimilis	Glossy-backed Drongo D. divaricatus is split from the Fork-tailed Drongo species complex (Fuchs et al. 2017). Includes ssp lugubris; D. adsimilis would retain ssp fugax.
Rote Leaf Warbler	Phylloscopus rotiensis	ADD	NEW	Timor Leaf Warbler P. presbytes	Newly described, vocally, genetically distinct species with long bill; sister to Timor Leaf Warbler P. presbytes (Ng et al. 2018)
Mountain White-eye	Zosterops montanus	DEL	AL	Japanese White-eye Z. japonicus	Mountain White-eye is lumped (9.1) into a revised Warbling [Japanese] White-eye complex (Lim et al. 2018).
Swinhoe's White-eye	Zosterops simplex	ADD	AS	Warbling [Japanese] White-eye Z. japonicus	Swinhoe’s White-eye is split (9.1) from the revised Japanese/Mountain White-eye complex; It includes ssp erwini and salvadorii (Lim et al. 2018)
Enggano White-eye	Zosterops salvadorii	DEL	AL	Swinhoe's White-eye Z. simplex salvadorii	Enggano White-eye (Z. salvadorii) is a weakly defined species best treated as a subspecies of Zosterops simplex (Lim et al. 2018).
Hume's White-eye	Zosterops auriventer	ADD	AS	Swinhoe's White-eye Z. simplex	Z. auriventer is redefined (9.1) as an upland species related to Z. everetti not a subspecies of Z. palpebrosus (Wells 2017). Includes ssp tahanensis and wetmorei. The name auriventer is the senior name available for mainland Asian populations named Hume’s White-eye.
Sangkar White-eye	Zosterops melanurus	ADD	AS	Hume's White-eye Z .auriventer	Sangkar White-eye is split from Indian [Oriental] White-eye (Lim et al. 2018). Includes ssp buxtoni
Socotra White-eye	Zosterops socotranus	ADD	AS	Reunion Grey White-eye Z. borbonicus	An outlying lineage that should be split from unrelated mainland Abyssinian White-eye Z. abyssinicus (Cox et al . 2014).
Mbulu White-eye	Zosterops mbuluensis	ADD	AS	Principe Speirops Z. leucophaeus	Mbulu White-eye is split from Montane White-eye subspecies complex Z. poliogastrus (Cox 2013, Cox et al. 2014, Pearson & Turner 2017). Is sister to Z. [abyssinicus] flavilateralus (Cox et al 2014). Monotypic.
Pale White-eye	Zosterops flavilateralis	ADD	AS	Abyssinian White-eye Z. abyssinicus	Pale White-eye is split from Abyssinian White-eye (Cox 2013, Cox et al. 2014, Pearson & Turner 2017). includes jubaensis)
Aldabra White-eye	Zosterops aldabrensis	ADD	AS	Seychelles White-eye Z. modestus	Aldabra White-eye is split from Malagasy White-eye. Is sister to Seychelles White-eye and, in turn, Kirk's White-eye and Malagasy White-eye (Cox et al. 2014)
South Pare White-eye	Zosterops winifredae	ADD	AS	Taita White-eye Z. silvanus	South Pare White-eye is split from artificial Montane White-eye subspecies complex Z. poliogastrus (Cox 2013, Cox et al. 2014, Pearson & Turner 2017). Sister to Z. pallidus?
Southern Yellow White-eye	Zosterops anderssoni	ADD	AS	Cape White-eye Z. virens	Southern Yellow White-eye is split from Northern [African] Yellow White-eye Z. senegalensis (Cox 2013, Cox et al. 2014, Pearson & Turner 2017); includes stierlingi provisionally
Broad-ringed White-eye	Zosterops eurycricotus	ADD	AS	Kikuyu White-eye Z. kikuyensis	Broad-ringed White-eye is split from artificial Montane White-eye subspecies complex Z. poliogastrus (Cox 2013, Cox et al. 2014, Pearson & Turner 2017). Monotypic
Green White-eye	Zosterops stuhlmanni	ADD	AS	Northern [African] Yellow White-eye Z. senegalensis	Green White-eye is split from Northern [African] Yellow White-eye Z. senegalensis (Cox 2013, Cox et al. 2014, Pearson & Turner 2017); includes ssp toroensis, scotti
Chattering Gnatwren	Ramphocaenus sticturus	ADD	AS	Trilling [Long-billed] Gnatwren R. melanurus	Split Chattering Gnatwrend from Long-billed Gnatwren based on phylogenetics, voice, plumage, and sympatry; includes ssp obscurus (Smith et al. 2018, SACC 790A). ENG: Rename R.melanurus ‘Trilling’ Gnatwren
Himalayan Shortwing	Brachypteryx cruralis	ADD	AS	Lesser Shortwing B. leucophris	The three Asian forms of White-browed Shortwing B. montana are split from Philippine and Indonesian taxa and from each other (HBW, Alström et al. 2018, Eaton et al. 2016)
Chinese Shortwing	Brachypteryx sinensis	ADD	AS	Himalayan Shortwing B. cruralis	The three Asian forms of White-browed Shortwing B. montana are split from Philippine and Indonesian taxa and from each other (HBW, Alström et al. 2018, Eaton et al. 2016)
Taiwan Shortwing	Brachypteryx goodfellowi	ADD	AS	Chinese Shortwing B. sinensis	The three Asian forms of White-browed Shortwing B. montana are split from Philippine and Indonesian taxa and from each other (HBW, Alström et al. 2018, Eaton et al. 2016)
Cherrie's Tanager	Ramphocelus costaricensis	DEL	AL	Scarlet-rumped Tanager R. passerinii	Lump Cherrie’s Tanager as a subspecies of Passerini’s Tanager R. passerinii based on nondiscrimination in playback expts (Freeman and Montgomery 2017, NACC 2018-A-4). Change English name of R. passerinii to Scarlet-rumped Tanager.

IOC Version 8.2 (June 27, 2018)
English Name	Scientific Name	Change	Code	List After Species	Source
Santa Marta Screech Owl	Megascops gilesi	ADD	NEW	White-throated Screech Owl M. albogularis	Krabbe 2017, SACC 769
Napo Screech Owl	Megascops napensis	DEL	AL	Foothill [Roraiman] Screech Owl M. roraimae	Lump Napo Screech Owl and Roraiman Screech Owl as M. roraimae, which has precedence (Krabbe 2017). ENG to Foothill Screech Owl. SACC 771
Colombian Screech Owl	Megascops colombianus	DEL	AL	Rufescent Screech Owl M. ingens	Species status of Colombian Screech Owl Megascops colombianus re M. ingens has been uncertain (Ridgely & Greenfield 2001, H&M, BLI, and SACC). Genetics and vocals support this lump (Krabbe 2017, SACC 770)
Painted Manakin	Machaeropterus eckelberryi	ADD	NEW	Western Striped Manakin M. striolatus	Lane et al. 2017, based on vocalizations only. SACC 761 approved revision. Note that IOC list splits polytypic M. striolatus from M. regulus, which this study advocates.
Rufescent Antshrike	Thamnistes rufescens	ADD	AS	Russet Antshrike T. anabatinus	Split Rufescent Antshrike from Russet Antshrike based on vocals and plumage (Isler & Whitney 2017, SACC 758).
Baron's Spinetail	Cranioleuca baroni	DEL	AL	Line-cheeked Spinetail C. antisiensis	Lump Baron’s Spinetail with Line-cheeked Spinetail due to clinal intergradation (Seeholzer & Brumfield 2017, SACC 762)
Rote Myzomela	Myzomela irianawidodoae	ADD	NEW	Sumba Myzomela M. dammermani	New species described on the basis of morphology and vocalizations from the island of Rote in the Lesser Sundas (Eaton et al 2016, Prawiradilaga et al. 2017)
White-bellied Whipbird	Psophodes leucogaster	ADD	AS	Black-throated [Western] Whipbird P. nigrogularis	White-bellied [Mallee] Whipbird Psophodes leucogaster (including lashmari) is split from Black-throated [Western] Whipbird P. nigrogularis including oberon (Burbidge et al. 2017). For history see Schodde & Mason 1999, Christidis & Boles 2008, Toon et al. 2013.
Admiralty Cicadabird	Edolisoma admiralitatis	ADD	AS	Edolisoma tenuirostris	Admiralty Cicadabird E. admiralitatis is split from Common Cicadabird E.tenuirostre (Jønsson et al. 2010, Pedersen et al 2018).
Taliabu Fantail	Rhipidura sulaensis	ADD	AS	Sulawesi [Rusty-bellied] Fantail	Taliabu Fantail is a proposed split from Rusty-bellied Fantail based on genomic analysis and vocalizations (Ng et al 2017). Two sweeps of mtDNA are invoked. ENG
Maghreb Magpie	Pica mauritanica	ADD	AS	Eurasian Magpie P. pica	Split from Eurasian Magpie follows revision of Pica pica species complex (Lee et al. 2003, Song et al. 2018). Monotypic
Asir Magpie	Pica asirensis	ADD	AS	Maghreb Magpie P. mauritanica	Split from Eurasian Magpie follows revision of Pica pica species complex (Lee et al. 2003, Song et al. 2018). Monotypic
Black-rumped Magpie	Pica bottanensis	ADD	AS	Asir Magpie P. asirensis	Split from Eurasian Magpie follows revision of Pica pica species complex (Lee et al. 2003, Song et al. 2018). Monotypic
Oriental Magpie	Pica serica	ADD	AS	Black-rumped Magpie P. bottanensis	Split from Eurasian Magpie follows revision of Pica pica species complex (Lee et al. 2003, Song et al. 2018). Includes anderssoni
Lesser Lophorina	Lophorina minor	ADD	AS	Greater [Superb Bird-of-paradise] Lophorina	Splits of the Superb Bird-of-paradise species complex follow Irestedt et al. 2017. L. minor is monotypic. Replace "Superb Bird-of-paradise with genus name Lophorina.
Crescent-caped Lophorina	Lophorina niedda	ADD	AS	Greater [Superb Bird-of-paradise] Lophorina	Splits of the Superb Bird-of-paradise species complex follows Irestedt et al. 2017. L. niedda includes inopinata ssp nova. Replace "Superb Bird-of-Paradise with genus name Lophorina.
Banggai Jungle Flycatcher	Cyornis pelingensis	ADD	AS	Sula [Henna-tailed] Jungle Flycatcher C. colonus	Banggai Jungle Flycatcher is split from C. colonus of Sula Island based on vocal differences, genetic divergence, and restricted gene flow (Eaton et a. 2016, Garg et al. 2018). ENG
Morelet's Seedeater	Sporophila morelleti	ADD	AS	Cinnamon-rumped [White-collared] Seedeater S. torqueola	Sporophila morelleti (including ssp sharpei, mutanda) is split from S. torqueola based on morphology, deep genetic divergence and polyphyly (Mason et al. 2018, HBW, NACC 2018-C-8). ENG: Rename torqueola Cinnamon-rumped Seedeater. Confirm w NACC 2018 decision
IOC Version 8.1 (Jan 25, 2018)
English Name	Scientific Name	Change	Code	List After Species	Source
Sclater's Crowned Pigeon	Goura sclaterii	ADD	AS	Scheepmaker's [Southern] Crowned Pigeon G. scheepmakeri	HBW, Gregory 2017, Bruxaux et al. 2017. G. sclaterii is sister to G. cristata; G. scheepmakeri is sister to G. victoria.
Ruwenzori Nightjar	Caprimulgus ruwenzorii	DEL	AL	Lump with Montane Nightjar C. poliocephalus	Dowsett et al. 2008, Jackson 2014, H&M4, HBW Alive
Cordillera Azul Antbird	Myrmoderus eowilsoni	ADD	NEW	Ferruginous-backed Antbird M. ferrugineus	Newly described distinct species sister to Ferruginous-backed Antbird (Moncrieff et al. 2018).
Purple-backed Fairywren	Malurus assimilis	ADD	AS	Variegated Fairywren M. lamberti	Purple-backed and Variegated Fairywrens are not sister species; putative hybrid zone is narrow with limited gene flow (McLean et al. 2012, 2017)
Liberian Greenbul	Phyllastrephus leucolepis	DEL	AL	NA	Enigmatic Liberian Greenbul is deemed a plumage variant of Icterine Greenbul P. icterinus (Phalan et al. 2013, Collinson et al. 2017, HBW)
Sclater's Nightingale-Thrush	Catharus maculatus	ADD	AS	Gould's [Spotted] Nightingale-Thrush C. dryas	Halley et al. 2017
Western Miombo Sunbird	Cinnyris gertrudis	ADD	AS	Eastern Miombo Sunbird C. manoensis	Western Miombo Sunbird is split from Eastern Miombo Sunbird aka Miombo Double-collared Sunbird (Irwin et al. 2014, HBW, Bowie MS). Previous name pintoi (Wolters 1956) is a junior subjective synonym of gertrudis Grote 1926.
Peruvian Pipit	Anthus peruvianus	ADD	AS	Yellowish Pipit (A. lutescens)	Anthus lutescens peruvianus is not part of Yellowish Pipit Anthus lutescens genetically or vocally (Van Els and Norambuena 2017, HBW).
Puna Pipit	Anthus brevirostris	ADD	AS	Short-billed Pipit (A. furcatus)	Van Els and Norambuena 2017
IOC Version 7.3 (July 31, 2017 )
English Name	Scientific Name	Change	Code	List After Species	Source
Thayer's Gull	Larus thayeri	DEL	AL		Treat as subspecies of Iceland Gull L. glaucoides (Godfrey 1986, Snell 2002, NACC 2017-C-7)
Plume-toed Swiftlet	Collocalia affinis	ADD	AS	Giant Swiftlet Hydrochous gigas	Rheindt et al. 2017; English name provisional
Grey-rumped Swiftlet	Collocalia marginata	ADD	AS	Plume-toed Swiftlet C. affinis	Rheindt et al. 2017
Ridgetop Swiftlet	Collocalia isonota	ADD	AS	Grey-rumped Swiftlet C. marginata	Rheindt et al. 2017
Tenggara Swiftlet	Collocalia sumbawae	ADD	AS	Ridgetop Swiftlet C. isonota	Rheindt et al. 2017
Drab Swiftlet	Collocalia neglecta	ADD	AS	Tenggara Swiftlet C. sumbawae	Rheindt et al. 2017
Satin Swiftlet	Collocalia uropygialis	ADD	AS	Glossy Swiftlet C. esculenta	Rheindt et al. 2017
Christmas Island Swiftlet	Collocalia natalis	ADD	AS	Cave Swiftlet C. linchii	Rheindt et al. 2017
Bogota Sunangel	Heliangelus zusii	DEL	TAX	Hybrid Long-tailed Sylph Aglaiocercus kingii X ???	Pérez-Emán et al. 2017; see also Kirchman et al. 2010
Northern Shrike	Lanius borealis	ADD	AS	Loggerhead Shrike L. ludovicianus	Northern Shrike L. borealis (incl sibiricus, bianchii, mollis, and funereus) is split from Great Grey Shrike L. excubitor (Olsson et al. 2010, Johnsen et al. 2010, H&M4, NACC 2017-B-8)
Natewa Silktail	Lamprolia klinesmithi	ADD	AS	[Taveuni] Silktail	Andersen et al. 2017
Banasura Laughingthrush	Montecincla jerdoni	ADD	AS	Nilgiri [Black-chinned] Laughingthrush M. cachinnans	Praveen & Nameer 2012, Robin et al. 2017.
Ashambu Laughingthrush	Montecincla meridionale	ADD	AS	Palani [Kerala] Laughingthrush M. fairbanki	Praveen & Nameer 2012, Robin et al. 2017.
Cassia Crossbill	Loxia sinesciuris	ADD	AS	Red Crossbill L. curvirostra	Benkman et al. 2009, Parchman et al. 2016, NACC 2017-A-4.
Lesser Redpoll	Acanthis cabaret	ADD	AS	Common Redpoll L. flammea	Renders taxonomic status of A. cabaret equivalent to hornemanni pending future analyses (Knox 2001, Ottvall et al. 2002, Marthinsen et al. 2008, Mason & Taylor 2015, BOU, H&M4, NACC 2017-B-7)
Baird's Junco	Junco bairdi	ADD	AS	Yellow-eyed Junco J. phaeonotus	Milá et al. 2016, NACC 2017-A-11
IOC Version 7.2 (April 22, 2017 )
English Name	Scientific Name	Change	Code	List After Species	Source
Black-fronted Francolin	Pternistis atrifrons	ADD	AS	Chestnut-naped Francolin P. castaneicollis	Töpfer et al. 2014
Bermuda Hawk	Bermuteo avivorus	ADD	TAX, EXT	White-browed Hawk Leucopternis kuhli	Recently described from late Pleistocene and likely Holocene deposits. Likely survived into the historical period based on early traveler report. BLI Checklist, Ver. 9
Norfolk Ground Dove	Alopecoenas norfolkensis	ADD	TAX, EXT	White-throated Ground Dove A. xanthonurus	Restore. Originally listed as Gallicolumba norfolciensis (Latham, 1801) but that name permanently suppressed by the ICZN. Redescribed by Forshaw, 2015 based on a contemporary illustration by John Hunter.
American Barn Owl	Tyto furcata	ADD	AS	Western Barn Owl	American Barn Owls (T. furcata) are in one of three clades of classical cosmopolitan Barn Owl (T. alba) (König & Weick, 2009, Nijman and Aliabadian 2013, Aliabadian et al. 2016)
Archbold's Owlet-nightjar	Aegotheles archboldi	DEL	AL	Mountain Owlet-nightjar A. albertisi	Beehler & Pratt 2016
Blue-vented Hummingbird	Amazilia hoffmanni	ADD	PHY, AS	Blue-tailed Hummingbird A. cyanura	Blue-vented Hummingbird is split from Steely-vented Hummingbird (A. saucerottei). It is a distinct member of the Middle American A. cyanura species group, not saucerottei (Stiles & Skutch 1989, McGuire et al. 2014, Jiménez & Ornelas 2015). Note hoffmanni, not sophiae.
Peruvian Racket-tail	Ocreatus peruanus	ADD	AS	White-booted [Booted] Racket-tail O. underwoodi	Peruvian Racket-tail is split from Booted Racket-tail (Schuchmann et al. 2016)
Rufous-booted Racket-tail	Ocreatus addae	ADD	AS	Peruvian Racket-tail O. peruanus	Rufous-booted Racket-tail is split from Booted Racket-tail (Schuchmann et al. 2016). Includes ssp annae pending more data
Bermuda Flicker	Colaptes oceanicus	ADD	TAX, EXT	Gilded Flicker C. chrysoides	Recently described from late Pleistocene and Holocene deposits. Likely survived into the historical period based on early traveler report. BLI Checklist, Ver. 9.
Cordilleran Parakeet	Psittacara frontatus	ADD	AS	Scarlet-fronted Parakeet P. wagleri	Includes minor. Corey 1918, Sibley & Monroe 1990, Ridgely and Greenfield 2001, HBW 2014, SACC Psittaciformes 7, Donegan et al. 2016.
Tatama Tapaculo	Scytalopus alvarezlopezi	ADD	NEW	El Oro Tapaculo S. robbinsi	Stiles et al. 2017
Cachar Bulbul	Iole cacharensis	ADD	AS	Olive Bulbul I. viridescens	Manawatthana et al. 2017; English name provisional
Charlotte's Bulbul	Iole charlottae	ADD	AS	Buff-vented Bulbul I. crypta	Manawatthana et al. 2017; English name provisional. See also proposed taxonomic changes
Whyte's Double-collared Sunbird	Cinnyris whytei	ADD	AS	Ruwenzori Double-collared Sunbird C. stuhlmanni	Split from Ludwig's Double-collared Sunbird C. ludovicianus. Sister to C. stuhlmanni; includes skye (Bowie et al. 2016).
IOC Version 7.1 (Jan 8, 2017)
English Name	Scientific Name	Change	Code	List After Species	Source
Foveaux Shag	Leucocarbo stewarti	ADD	AS/ENG	Otago [Stewart Island] Shag L. chalconotus	Rawlence et al. 2016
Merida Sunangel	Heliangelus spencei	ADD	AS	Amethyst-throated Sunangel H. amethysticollis	Donegan et al. 2015
Longuemare's Sunangel	Heliangelus clarisse	ADD	AS	Merida Sunangel H. spencei	Donegan et al. 2015
White-throated Wedgebill S. albogularis	Schistes albogularis	ADD	AS/ENG	Geoffroy's Wedgebill [Wedge-billed Hummingbird] S. geoffroyi	Donegan et al. 2015
Scarlet Flycatcher	Pyrocephalus rubinus	ADD	AS/SEQ	Black-capped Flycatcher Empidonax atriceps	Carmi et al. 2016. Sequence follows Carmi et al.
Darwin's Flycatcher	Pyrocephalus nanus	ADD	AS	Vermilion Flycatcher P. obscurus	Carmi et al. 2016
San Cristobal Flycatcher	Pyrocephalus dubius	ADD	AS	Darwin's Flycatcher P. nanus	Carmi et al. 2016
Double-collared Crescentchest	Melanopareia bitorquata	ADD	AS	Collared Crescentchest M. torquata	Lopes & Gonzaga 2016
Chinese Rubythroat	Calliope tschebaiewi	ADD	AS/ENG	Himalayan [White-tailed] Rubythroat C. pectoralis	Liu et al. 2016, English names provisional
Mediterranean Flycatcher	Muscicapa tyrrhenica	ADD	AS	Spotted Flycatcher M. striata	Vigano & Corso 2015, Pons et al. 2016. Includes balearica
Genovesa Ground Finch	Geospiza acutirostris	ADD	AS	Sharp-beaked Ground Finch G. difficilis	Lamichhaney et al. 2015, SACC 676A-7/1
Vampire Ground Finch	Geospiza septentrionalis	ADD	AS	Genovesa Ground Finch G. acutirostris	Lamichhaney et al. 2015, SACC 676A-7/1
Genovesa Cactus Finch	Geospiza propinqua	ADD	AS	Common Cactus Finch G. scandens	Genovesa Cactus Finch is split from Espanola [Large] Cactus Finch G. conirostris, which is sister to G. magnirostris (Lamichhaney et al. 2015, SACC 676B-7/1). ENG
IOC Version 6.4 (Oct 22, 2016)
English Name	Scientific Name	Change	Code	List After Species	Source
Violet-throated Toucanet	Aulacorhynchus cognatus	SSP	AL	Blue-throated Toucanet A. caeruleogularis	Winker 2016
Santa Marta Toucanet	Aulacorhynchus lautus	SSP	AL	White-throated Toucanet A. albivitta	Winker 2016
Grey-throated Toucanet	Aulacorhynchus griseigularis	SSP	AL	White-throated Toucanet A. albivitta	Winker 2016
Baliem Whistler	Pachycephala balim	ADD	AS	Yellow-throated Whistler P. macrorhyncha	Andersen et al. 2014, Beehler & Pratt 2016
Chestnut-throated Flycatcher	Myiagra castaneigularis	ADD	AS	Azure-crested Flycatcher M. azureocapilla	Andersen et al. 2015 + morphology (Pratt, comm); includes whitneyi.
Mongolian Short-toed Lark	Calandrella dukhunensis	ADD	AS	Hume's Short-toed Lark C. acutirostris	Split from Greater Short-toed Lark C. brachydactyla. Related instead to C. acutirostris (Alström et al. 2013, Stervander 2016).
Streak-eared Bulbul	Pycnonotus conradi	ADD	AS	Ayeyarwady/Irrawaddy [Streak-eared] Bulbul P. blanfordi	Garg et al. 2016; transfer English name Streak-eared Bulbul to P. conradi
IOC Version 6.3 (July 20, 2016)
English Name	Scientific Name	Change	Code	List After Species	Source
Grey-faced Petrel	Pterodroma gouldi	ADD	AS	Great-winged Petrel P. macroptera	Wood et al. 2016. Not sister taxa
Townsend's Storm Petrel	Oceanodroma socorroensis	ADD	AS	Leach's Storm Petrel O. leucorhoa	Townsend's Storm Petrel is split from Leach's Storm Petrel based on different vocalizations, morphology and from Ainley's Storm Petrel O. cheimomnestes also by sympatry with seasonal isolation (Ainley 1980, Howell et al. 2009, Howell 2012,NACC 2016-C-16).
Ainley's Storm Petrel	Oceanodroma cheimomnestes	ADD	AS	Townsend's Storm Petrel O. socorroensis	Ainley's Storm Petrel is split from Leach's Storm Petrel, and based on different vocalizations, morphology and from Townsend's Storm Petrel O. socorroensis also by sympatry with seasonal isolation (Ainley 1980, Howell et al. 2009, Howell 2012, NACC 2016-C-16).
Caribbean Coot	Fulica caribaea	DEL	AL	American Coot F. americana	Caribbean Coot is a white shield color morph of American Coot (HBW Alive, Donegan et al. 2015, NACC 2016-A-9)
Cyprus Scops Owl	Otus cyprius	ADD	AS	Eurasian Scops Owl O. scops	Flint et al. 2015
Lesser Violetear	Colibri cyanotus	ADD	AS	Mexican [Green] Violetear C. thalassinus	Remsen et al. 2015, NACC 2016-C-10. Mexican Violetear becomes monotypic.
Red-backed Flameback	Dinopium psarodes	ADD	AS	Black-rumped Flameback D. benghalense	Fernando et al. 2016; Hybrid zone analysis indicates essential reproductive isolation; but see also Freed et al. 2015.
Puerto Rican Parakeet	Psittacara maugei	ADD	AS	Hispaniolan Parakeet P. chloropterus	Psittacara maugei is treated as a species by Olson 2015 and NACC 2016-B-11)
Sula Pitta	Erythropitta dohertyi	ADD	AS	Philippine [Red-bellied] Pitta E. erythrogaster	Sula Pitta is split from Philippine [Red-bellied] Pitta E. erythrogaster (Irestedt et al. 2013, Collar et al. 2015), but see Rheindt et al. (2010).
Sulawesi Pitta	Erythropitta celebensis	ADD	AS	Sula Pitta E. dohertyi	Sulawesi Pitta is split from Philippine [Red-bellied] Pitta E. erythrogaster (Irestedt et al. 2013, Collar et al. 2015)
Siao Pitta	Erythropitta palliceps	ADD	AS	Sulawesi Pitta E. celebensis	Siao Pitta is split from Philippine [Red-bellied] Pitta E. erythrogaster (Irestedt et al. 2013, Collar et al. 2015)
Sangihe Pitta	Erythropitta caeruleitorques	ADD	AS	Siao Pitta E. palliceps	Sangihe Pitta is split from Philippine [Red-bellied] Pitta E. erythrogaster (Irestedt et al. 2013, Collar et al. 2015)
South Moluccan Pitta	Erythropitta rubrinucha	ADD	AS	Sangihe Pitta E. caeruleitorques	South Moluccan Pitta is split from Philippine [Red-bellied] Pitta E. erythrogaster (Irestedt et al. 2013, Collar et al. 2015). Includes piroensis.
North Moluccan Pitta	Erythropitta rufiventris	ADD	AS	South Moluccan Pitta E. rubrinucha	North Moluccan Pitta is split from Philippine [Red-bellied] Pitta E. erythrogaster (Irestedt et al. 2013, Collar et al. 2015). Includes cyanonota, bernsteini, [obiensis, inornata]
Louisiade Pitta	Erythropitta meeki	ADD	AS	North Moluccan Pitta E. rufiventris	Louisiade Pitta is split from Philippine [Red-bellied] Pitta E. erythrogaster (Irestedt et al. 2013, Collar et al. 2015)
Bismarck Pitta	Erythropitta novaehibernicae	ADD	AS	Louisiade Pitta E. meeki	Bismarck Pitta is split from Philippine [Red-bellied] Pitta E. erythrogaster (Irestedt et al. 2013, Collar et al. 2015). Includes extima, splendida, gazellae
Papuan Pitta	Erythropitta macklotii	ADD	AS	Bismarck Pitta E. novaehibernicae	Papuan Pitta is split from Philippine [Red-bellied] Pitta E. erythrogaster (Irestedt et al. 2013, Collar et al. 2015). Includes ssp habenichti, finschii, loriae, digglesi, aruensis and kuehni.
Ayacucho Thistletail	Asthenes ayacuchensis	ADD	AS	Vilcabamba Thistletail A. vilcabambae	Hosner et al. 2015; SACC 697
Aceh Bulbul	Pycnonotus snouckaerti	ADD	AS	Orange-spotted Bulbul P. bimaculatus	Eaton & Collar 2015; vocal analysis pending
Canebrake Wren	Cantorchilus zeledoni	ADD	AS	Cabanis's [Plain] Wren C. modestus	NACC 2016-C-14
Isthmian Wren	Cantorchilus elutus	ADD	AS	Cabanis's [Plain] Wren C. modestus	NACC 2016-C-14
Santa Marta Wood Wren	Henicorhina anachoreta	ADD	AS	Grey-breasted Woodwren H. leucophrys	Caro et al. 2013, SACC 700 7/0; English name provisional
Himalayan Thrush	Zoothera salimalii	ADD	NEW	Sichuan Thrush Z. griseiceps	Alström et al. 2016
Sichuan Thrush	Zoothera griseiceps	ADD	AS	Alpine [Plain-backed] Thrush Z. mollissima	Alström et al. 2016
Gran Canaria Blue Chaffinch	Fringilla polatzeki	ADD	AS	[Tenerife] Blue Chaffinch F. teydea	Sangster et al. 2015
IOC Version 6.2 (Apr 20, 2016)
English Name	Scientific Name	Change	Code	List After Species	Source
Sultan's Cuckoo-Dove	Macropygia doreya	ADD	AS	[Amboyna] Slender-billed Cuckoo-Dove M. amboinensis	Includes albicapilla, albiceps, atrata, sanghirensis, sedecima, balim (Ng et al. 2016). "Sultan's" is proposed as a fitting name with a historic connection for a range of new splits from the northern Moluccan archipelago, which has historically been known best as the seat of the powerful Sultanate of Ternate (to the present day) (Eaton & Rheindt).
Enggano Cuckoo-Dove	Macropygia cinnamomea	ADD	AS	Ruddy Cuckoo-Dove M. emiliana	Monotypic (Ng et al. 2016)
Barusan Cuckoo-Dove	Macropygia modiglianii	ADD	AS	Ruddy Cuckoo-Dove M. emiliana	Includes elassa, hypopercna (Ng et al. 2016). An endemic species restricted to the West Sumatran island chain, once called the Barusan Island chain.
Tanimbar Cuckoo-Dove	Macropygia timorlaoensis	ADD	AS	[Timor] Bar-necked Cuckoo-Dove M. magna	Monotypic (Ng et al. 2016)
Flores Sea Cuckoo-Dove	Macropygia macassariensis	ADD	AS	[Timor] Bar-necked Cuckoo-Dove M. magna	Includes longa (Ng et al. 2016)
Sula Cuckoo-Dove	Turacoena sulaensis	ADD	AS	White-faced [Cuckoo-] Dove T. manadensis	Ng & Rheindt 2016
Purple-capped Fruit Dove	Ptilinopus ponapensis	ADD	AS	Crimson-crowned Fruit Dove P. porphyraceus	Cibois et al. 2014, Hayes et al. 2016
Kosrae Fruit Dove	Ptilinopus hernsheimi	ADD	AS	Crimson-crowned Fruit Dove P. porphyraceus	Hayes et al. 2016
Turquoise-throated Barbet	Psilopogon chersonesus	ADD	AS	Blue-throated Barbet P. asiaticus	Sister to Black-browed Barbet P. oorti (den Tex and Leonard 2013)
Necklaced Barbet	Psilopogon auricularis	ADD	AS	Golden-throated Barbet P. franklinii	den Tex and Leonard 2013. See HBW Alive for plumage diagnosis
Coopmans's Elaenia	Elaenia brachyptera	ADD	AS	Lesser Elaenia E. chiriquensis	Rheindt et al 2015; SACC 686
Tan-capped Catbird	Ailuroedus geislerorum	ADD	AS	White-eared Catbird A. buccoides	Includes molestus (Irestedt et al. 2015); English name provisional
Ochre-breasted Catbird	Ailuroedus stonii	ADD	AS	White-eared Catbird A. buccoides	Includes cinnamomea (Irestedt et al. 2015); English name provisional
Spotted Catbird	Ailuroedus maculosus	ADD	AS	[Black-eared] Spotted Catbird A. melanotis	Irestedt et al. 2015
Black-capped Catbird	Ailuroedus melanocephalus	ADD	AS	[Black-eared] Spotted Catbird A. melanotis	Irestedt et al. 2015
Huon Catbird	Ailuroedus astigmaticus	ADD	AS	[Black-eared] Spotted Catbird A. melanotis	Irestedt et al. 2015
Arfak Catbird	Ailuroedus arfakianus	ADD	AS	[Black-eared] Spotted Catbird A. melanotis	Includes misoliensis (Irestedt et al. 2015)
Northern Catbird	Ailuroedus jobiensis	ADD	AS	[Black-eared] Spotted Catbird A. melanotis	Irestedt et al. 2015; includes guttaticollis.
Temotu Whistler	Pachycephala vanikorensis	ADD	AS	Fiji Whistler P. vitiensis	Andersen et al. 2014, Jønsson et al. 2014. Includes ornata and utupae [from Fiji Whistler], and vanikorensis [from Melanesian Whistler Pachycephala chlorura]. Temotu is the local name of the [Santa Cruz] islands and the current and official name of that province in the Solomon Islands
Grey-brown White-eye	Zosterops ponapensis	ADD	AS	Kosrae [Grey-brown] White-eye Z. cinereus	Hayes et al. 2016; English name Grey-brown White-eye appropriate to and established for ponapensis. Rename Z. cinereus 'Kosrae White-eye' (D. Pratt)
Dark-eyed White-eye	Zosterops tetiparius	ADD	AS	Solomons White-eye Z. kulambangrae	Includes paradoxus (Moyle et al. 2009, H&M4, but also see H&M4: 644, Mees 1955 re use of rendovae)
Forest White-eye	Zosterops stenocricotus	ADD	AS	Fernando Po Speirops Z. brunneus	Vocally distinct ; not a member of the senegalensis cryptic species complex. Sister to Zosterops (Speirops) brunneus (Fry et al. 2000, Cox 2013, Cox et al. 2014).
IOC Version 6.1 (Jan 25, 2016)
English Name	Scientific Name	Change	Code	List After Species	Source
Tschudi's Nightjar	Systellura decussata	ADD	AS	Band-winged Nightjar S. longirostris	Cleere 2010, SACC 677A; English name provisional. Generic revision to follow.
Western Striolated Puffbird	Nystalus obamai	ADD	NEW	[Eastern] Striolated Puffbird	Whitney et al. 2013e, SACC 617, 679, 701A.
Roosevelt Stipple-throated Antwren	Epinecrophylla dentei	DEL	AL	Treat as a subspecies of Epinecrophylla amazonica.	Described as a species (Whitney et al. 2013e), but treated as a subspecies of E. amazonica ( SACC 589B).
Sedge Wren	Cistothorus stellaris	ADD	AS, SEQ	After Fulvous Wren and before Merida Wren	Sedge Wren Cistothorus stellaris is split from Grass Wrens (C. platensis) of Middle and South America
Bundok Flycatcher	Ficedula luzoniensis	ADD	AS	After Cryptic [Russet-tailed] Flycatcher (F. crypta)	Bundok Flycatcher is split from Snowy-browed Flycatcher F. hyperythra (Moyle et al. 2015). Includes [Philippine] subspecies calayensis, luzoniensis,[mindorensis], rara, nigrorum, malindangensis, daggayana, montigena, and matutumensis
Merida Brushfinch	Atlapetes meridae	ADD	AS	Moustached Brushfinch A. albofrenatus	Merida Brushfinch is split from Moustached Brushfinch (Donegan et al. 2014)

IOC Version 5.4 (Oct 24, 2015)
English Name	Scientific Name	Change	Code	List After Species	Source
Taiwan Bamboo Partridge	Bambusicola sonorivox	ADD	AS	Chinese Bamboo Partridge B. thoracica	Collar 2004, Hung et al. 2014, HBW Alive, Clements et al. 2015
Subantarctic Shearwater	Puffinus elegans	ADD	AS	Little Shearwater P. assimilis	Onley & Scofield 2007, Gill et al. 2010.
Desert Owl	Strix hadorami	ADD	AS	Omani [Hume’s] Owl S. butleri	Kirwan et al. 2015, Robb et al. 2015
Niau Kingfisher	Todiramphus gertrudae	ADD	AS	Mangareva [Tuamotu] Kingfisher	Andersen et al. 2015, Clements et al. 2015
Rusty-capped Kingfisher	Todiramphus pelewensis	ADD	AS	Guam [Micronesian] Kingfisher T. cinnamominus	Andersen et al 2015, Clements et al. 2015; ‘Rusty-capped' Kingfisher is the recommended English name, not Palau Kingfisher (Pratt, comm)
Pohnpei Kingfisher	Todiramphus reichenbachii	ADD	AS	Rusty-capped Kingfisher T. pelewensis	Andersen et al 2015, Clements et al. 2015
Pacific Kingfisher	Todiramphus sacer	ADD	AS	Collared Kingfisher T. chloris	Andersen et al. 2015, Clements et al. 2015; additional proposed splits include Fiji (vitiensis), Tonga (sacer), Peale’s (pealei)(Pratt & Mittermeier in press, Pratt in press)
Islet Kingfisher	Todiramphus colonus	ADD	AS	'Pacific' Kingfishser T. sacer	Andersen et al. 2015, Clements et al. 2015
Torresian Kingfisher	Todiramphus sordidus	ADD	AS	Islet Kingfisher T. colonus	Andersen et al. 2015, Clements et al. 2015
Mariana Kingfisher	Todiramphus albicilla	ADD	AS	Torresian Kingfisher T. sordidus	Andersen et al. 2015, Clements et al. 2015
Melanesian Kingfisher	Todiramphus tristrami	ADD	AS	Mariana Kingfisher T. albicilla	Andersen et al. 2015, Clements et al. 2015
Dimorphic Dwarf Kingfisher	Ceyx margarethae	ADD	AS	Moluccan [Variable] Dwarf Kingfisher C. lepidus	Andersen et al. 2015, Clements et al. 2013
Buru Dwarf Kingfisher	Ceyx cajeli	ADD	AS	Dimorphic Dwarf Kingfisher C. margarethae	Andersen et al. 2015, Clements et al. 2013
Sula Dwarf Kingfisher	Ceyx wallacii	ADD	AS	Buru Dwarf Kingfisher C. cajeli	Andersen et al. 2015, Clements et al. 2013
Papuan Dwarf Kingfisher	Ceyx solitarius	ADD	AS	Sula Dwarf Kingfisher C. wallacii	Andersen et al. 2015, Clements et al. 2013
Manus Dwarf Kingfisher	Ceyx dispar	ADD	AS	Papuan Dwarf Kingfisher C. solitarius	Andersen et al. 2015, Clements et al. 2013
New Ireland Dwarf Kingfisher	Ceyx mulcatus	ADD	AS	Manus Dwarf Kingfisher C. dispar	Andersen et al. 2015, Clements et al. 2013
New Britain Dwarf Kingfisher	Ceyx sacerdotis	ADD	AS	New Ireland Dwarf Kingfisher C. mulcatus	Andersen et al. 2015, Clements et al. 2013
North Solomons Dwarf Kingfisher	Ceyx meeki	ADD	AS	New Britain Dwarf Kingfisher C. sacerdotis	Andersen et al. 2015, Clements et al. 2013; includes pallidus
New Georgia Dwarf Kingfisher	Ceyx collectoris	ADD	AS	North Solomons Dwarf Kingfisher C. meeki	Andersen et al. 2015, Clements et al. 2013
Malaita Dwarf Kingfisher	Ceyx malaitae	ADD	AS	New Georgia Dwarf Kingfisher C. colletoris	Andersen et al. 2015, Clements et al. 2013
Guadalcanal Dwarf Kingfisher	Ceyx nigromaxilla	ADD	AS	Malaita Dwarf Kingfisher C. malaitae	Andersen et al. 2015, Clements et al. 2013
Makira Dwarf Kingfisher	Ceyx gentianus	ADD	AS	Guadalcanal Dwarf Kingfisher C. nigromaxilla	Andersen et al. 2015, Clements et al. 2013
Northern Silvery Kingfisher	Ceyx flumenicola	ADD	AS	[Southern] Silvery Kingfisher C. argentatus	Collar 2011b, Andersen et al. 2013, Clements et al. 2015
Roosevelt Stipple-throated Antwren	Epinecrophylla dentei	ADD	AS	Madeira Stipple-throated Antwren E. amazonica	Whitney et al. 2013e; SACC 589B
Perija Tapaculo	Scytalopus perijanus	ADD	NEW	Brown-rumped Tapaculo S. latebricola	Donegan and Avendano 2008, Avendaño et al. 2015, SACC 670
Cryptic Treehunter	Cichlocolaptes mazarbarnetti	ADD	NEW	Pale-browed Treehunter C. leucophrus	Mazar Barnett & Buzzetti 2014, Claramunt 2014, Clements et al. 2015; SACC 714 raises doubts. Revisit? SA : ne Brazil (Alagoas, Pernambuco)
Amur Paradise Flycatcher	Terpsiphone incei	ADD	AS	Indian [Asian] Paradise Flycatcher T. paradisi	Fabre et al. 2012, Andersen et al. 2015, H&M4, Clements et al. 2015
'Blyth's/Oriental' Paradise Flycatcher	T. affinis	ADD	AS	Indian [Asian] Paradise Flycatcher T. paradisi	Fabre et al. 2012, Andersen et al. 2015, H&M4, Clements et al. 2015; English name under discussion
Papuan Scrub Robin	Drymodes beccarii	ADD	AS	Northern Scrub Robin D. superciliaris	Christidis et al. 2011, Pratt and Beehler 2015, Clements et al. 2015.
North Island Robin	Petroica longipes	ADD	AS	Tomtit P. macrocephala	North Island Robin is split from South Island [New Zealand] Robin P. australis (Gill et al. 2010, H&M4).
Norfolk Robin	Petroica multicolor	ADD	AS	Pacific Robin P. [multicolor] pusilla	Kearns et al. 2015
Highland Rush Warbler	Bradypterus centralis	ADD	AS	Little Rush Warbler B. baboecala	Alström et al. 2011, Dowsett & Dowsett-Lemaire 2015, H&M4; ssp centralis and elgonensis
IOC Version 5.3 (July 22, 2015)
English Name	Scientific Name	Change	Code	List After Species	Source
Rapa Shearwater	Puffinus myrtae	ADD	AS	Newell's Shearwater P. newelli	Howell 2012, Martinez et al. 2015, NACC 2015-A-11b
'White-bellied' Wood Rail	Aramides albiventris	ADD	AS	Grey-necked Wood Rail A. cajaneus	Marcondes & Silveira 2015; English name?
Grey-headed Swamphen	Porphyrio poliocephalus	ADD	AS	African Swamphen P. madagascariensis	Grey-headed Swamphen is split from Western [Purple] Swamphen P. porphyrio (Sangster 1998, Garcia-R & Trewick 2015).
Black-backed Swamphen	Porphyrio indicus	ADD	AS	Grey-headed Swamphen P. poliocephalus	Black-backed Swamphen is split from Western [Purple] Swamphen P. porphyrio (Sangster 1998, Garcia-R & Trewick 2015).
Philippine Swamphen	Porphyrio pulverulentus	ADD	AS	Black-backed Swamphen P. indicus	Philippine Swamphen is split from Western [Purple] Swamphen P. porphyrio (Sangster 1998, Garcia-R & Trewick 2015).
Australasian Swamphen	Porphyrio melanotus	ADD	AS	Philippine Swamphen P. pulverulentus	Australasian Swamphen is split from Western [Purple] Swamphen P. porphyrio (Sangster 1998, Garcia-R & Trewick 2015).
Red-billed Gull	Chroicocephalus scopulinus	DEL	AL	Ssp of Silver Gull C. novaehollandiae	Originally split by Schodde et al 1983, Sibley & Monroe 1990, Burger & Gochfeld 1996, and Given et al 2005, but now lumped by H&M4, HBW Alive, Gill et al 2010
Turquoise-winged Parrotlet	Forpus spengeli	ADD	AS	Green-rumped Parrotlet F. passerinus	Taxonomic status uncertain. H&M4 treat as ssp of Green-rumped Parrotlet instead of Blue-winged Parrotlet based on mtDNA only (Smith et al 2013). Turquoise-winged Parrotlet of HBW Alive resurrects original split of species. Treating it as such places the burden of proof of gene flow (with one or the other sisters) on lumping (Bocalini & Silveira 2015). SACC needs proposal.
Large-billed Parrotlet	Forpus crassirostris	ADD	AS	Blue-winged Parrotlet F. xanthopterygius	Smith et al 2013. English name from Hellmayr & Conover. SACC needs proposal
Admirable Hummingbird	Eugenes spectabilis	ADD	AS	Rivoli's [Magnificent] Hummingbird E. fulgens	E. spectabilis was previously split from E. fulgens (Ridgway 1911, Cory 1918, see also AOU 1983, Stiles & Skutch 1989, Powers 1999). Genetic studies reinforce this split (Zamudio-Beltrán & Hernández-Baños 2015).
Inagua Woodstar	Calliphlox lyrura	ADD	AS	Bahama Woodstar C. evelynae	Feo et al. 2015, NACC 2015-B-8
Four-colored Bushshrike	Telophorus quadricolor	DEL	AL	Gorgeous Bushshrike T. viridis	Original split followed Sibley & Monroe 1990, but see Dowsett & Dowsett‐Lemaire 1993, H&M4, HBW Alive
Tarim Babbler	Rhopophilus albosuperciliaris	ADD	AS	Beijing Babbler [Chinese Hill Warbler] R. pekinensis	Leader et al 2013
Sichuan Bush Warbler	Locustella chengi	ADD	NEW	Taiwan Bush Warbler L. alishanensis	Alström et al 2015
Dalat Bush Warbler	Locustella idonea	ADD	AS	Russet Bush Warbler L. mandelli	Alström et al 2015
Timor Bush Warbler	Locustella timorensis	DEL	AL	Javan Bush Warbler L. montis	Subspecies of Javan Bush Warbler (Alström et al 2015)
† Kauai Akialoa	Akialoa stejnegeri	ADD	AS	Oahu [Greater] Akialoa Akialoa ellisiana	NACC 2015-B-4b
† Maui-nui Akialoa	Akialoa lanaiensis	ADD	AS	Oahu [Greater] Akialoa Akialoa ellisiana	NACC 2015-B-4b
Kauai Nukupuu	Hemignathus hanapepe	ADD	AS	[Oahu] Nukupuu H. lucidus	NACC 2015-B-4a
Maui Nukupuu	Hemignathus affinis	ADD	AS	[Oahu] Nukupuu H. lucidus	NACC 2015-B-4a
† Oahu Akepa	Loxops wolstenholmei	ADD	AS	[Hawaii] Akepa L. coccineus	NACC 2015-B-4c
Maui Akepa	Loxops ochraceus	ADD	AS	[Hawaii] Akepa L. coccineus	NACC 2015-B-4c
IOC Version 5.2 (April 23, 2015)
English Name	Scientific Name	Change	Code	List After Species	Source
Forsten's Megapode	Megapodius forsteni	DEL	AL	Dusky Megapode (M. freycinet)	Treat as ssp of Dusky Megapode, including buruensis (Birks & Edwards 2002, Harris et al 2014, HBW Alive)
Central Nicobar Serpent Eagle	Spilornis [cheela] minimus	DEL/CORR	AL	Crested Serpent Eagle S. cheela	Rasmussen & Anderton 2005, 2012. Incorrectly split with S. klossi.
Naretha Bluebonnet	Northiella narethae	ADD	AS	[Eastern] Bluebonnet	Dolman & Joseph 2015
Northern Mealy Amazon	Amazona guatemalae	ADD	AS	Kawall 's Amazon A. kawalli	Northern Mealy Amazon is split from Southern Mealy Amazon (Wenner et al 2012; HBW Alive)
Tepui Flycatcher	Mionectes roraimae	ADD	AS	McConnell's Flycatcher M. macconnelli	Hilty & Escanio 2014; SACC proposal badly needed. English name under discussion. Includes mercedesfosterae.
Fiji [Lesser] Wattled Honeyeater	Foulehaio taviunensis	ADD	AS	[Polynesian] Wattled Honeyeater F. carunculatus	Andersen et al 2014, Pratt MS
Kikau	Foulehaio procerior	ADD	AS	'Fiji' Wattled Honeyeater F. taviunensis	Andersen et al 2014, Pratt MS
'Giant' Honeyeater	Gymnomyza brunneirostris	ADD	AS	Yellow-billed [Giant] Honeyeater G. viridis	Andersen et al 2014, Pratt MS
Copperback Quail-thrush	Cinclosoma clarum	ADD	AS	Chestnut [Chestnut-backed] Quail-thrush C. castanotum	Dolman & Joseph 2015
Northern Parrotbill	Paradoxornis polivanovi	DEL	AL	Reed Parrotbill P. heudi	Treat as ssp of Reed Parrotbill (Penhallurick and Robson 2009, HBW, H&M4, Yeung et al 2011)
Chinese Blackbird	Turdus mandarinus	ADD	AS	Common Blackbird T. merula	Rasmussen & Anderton 2005, Collar 2005, Robson 2008, Nylander et al 2008, H&M4; includes sowerbyi, but not intermedius
Ecuadorian Seedeater	Amaurospiza aequatorialis	ADD	AS	Cabanis's [Blue] Seedeater A. concolor	Bryson et al 2014, SACC needs proposal; English names under discussion
Rothschild's Grosbeak	Cyanocompsa rothschildii	ADD	AS	Blue-black Grosbeak C. cyanoides	Bryson et al 2014, SACC needs proposal; generic revision pending
IOC Version 5.1 (Jan 15, 2015)
English Name	Scientific Name	Change	Code	List After Species	Source
Cliff Parakeet	Myiopsitta luchsi	ADD	AS	Monk Parakeet M. monachus	Collar 1997, Russello et al. 2008, SACC 93 & 503 in review
Purple-crowned Plovercrest	Stephanoxis loddigesii	ADD	AS	[Green-crowned] Plovercrest S. lalandi	Cavarzere et al. 2014, SACC 664; English names under discussion
Andean [Tolima] Blossomcrown	Anthocephala berlepschi	ADD	AS	[Santa Marta] Blossomcrown A. floriceps	Lozano-Jaramillo et al. 2014, SACC 654/669; English names provisional
Boa Nova Tapaculo	Scytalopus gonzagai	ADD	NEW	Mouse-colored Tapaculo S. speluncae	Mauricio et al. 2014, SACC 643.
Louisiade Whistler	Pachycephala collaris	ADD	AS	Oriole Whistler P. orioloides	Andersen et al. 2013, Jønsson et al 2014; includes ssp rosseliana
Western Whistler	Pachycephala occidentalis	ADD	AS	Australian Golden Whistler P. pectoralis	Joseph et al 2014
Owston's Tit	Sittiparus owstoni	ADD	AS	Varied Tit S. varius	McKay et al. 2014
Iriomote Tit	Sittiparus olivaceus	ADD	AS	Owston's Tit S. owstoni	McKay et al.. 2014
Chestnut-bellied Tit	Sittiparus castaneoventris	ADD	AS	Iriomote Tit S. olivaceus	McKay et al.. 2014
Sulawesi Streaked Flycatcher	Muscicapa sodhii	ADD	NEW	Asian Brown Flycatcher M. dauurica	Harris et al. 2014
Sooty Fox Sparrow	Passerella unalaschcensis	ADD	AS	Red Fox Sparrow P. iliaca	Zink 1994, Zink & Kessen 1999, Weckstein et al. 2002, Zink & Weckstein 2003, HBW 16
Slate-colored Fox Sparrow	Passerella schistacea	ADD	AS	Sooty Fox Sparrow P. unalaschcensis	Zink 1994, Zink & Kessen 1999, Weckstein et al 2002, Zink & Weckstein 2003, HBW 16.
Thick-billed Fox Sparrow	Passerella megarhyncha	ADD	AS	Slate-colored Fox Sparrow P. schistacea	Zink 1994, Zink & Kessen 1999, Weckstein et al. 2002, Zink & Weckstein 2003, HBW 16
Black-fronted Brush Finch	Atlapetes nigrifrons	ADD	AS	Yellow-breasted [Rufous-naped] Brush Finch A. latinuchus	Donegan & Huertas 2006, Donegan et al. 2014

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