On this page you can view how the first release of the AviList impacted on the contents of this ATWB eBook.

To see how earlier updates to the IOC bird list impacted on the contents of this eBook, click here.

 

2025 edition -> 2026 edition     IOC bird list v 14.2 -> AviList v2025

[Note: In v14.2 of the IOC bird list, birds that are regularly present along the Pacific coast of Central America and Colombia were incorrectly shown as being of species 142/0845  Brown Booby. This is the subspecies etesiaca, which should have been ascribed to species 142/084E  Cocos Booby. The error was corrected in v15.1 of the IOC bird list. However, in view of the significance of this error for the distribution of the newly-split species, that error was acknowledged and corrected in the 2025 edition of this eBook. Hence, that correction in v15.1 did not impact upon the content of this eBook.]

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Non-Passerine Orders have been resequenced. Within some Orders, there has also been a resequencing of families.

…………………………………………………………………….

The following families have been moved from elsewhere in the IOC bird list to Part 3 of the AviList:

Family: Caprimulgidae – Nightjars and Nighthawks from Part 1

Family: Steatornithidae – Oilbird from Part 1

Family: Nyctibiidae – Potoos from Part 1

Family: Podargidae – Frogmouths from Part 1

Family: Aegothelidae – Owlet-nightjars from Part 1

Family: Hemiprocnidae – Treeswifts from Part 1

Family: Apodidae – Swifts from Part 1

Family: Trochilidae – Hummingbirds from Part 1

…………………………………………………………………….

The following families have been moved from Part 3 of the IOC bird list to elsewhere in the AviList:

Family: Opisthocomidae – Hoatzin to Part 2

The 19 families within Order CHARADRIIFORMES to Part 2

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The species in Family: Gaviidae – Loons have been resequenced.

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Family: Spheniscidae – Penguins has been partially resequenced.

…………………………………………………………………….

075/051T    Eastern Rockhopper Penguin    Eudyptes filholi

(Australasia, Southern Ocean, Indian Ocean)

has been split from:

075/0518    Southern Rockhopper Penguin

which has a new English name:

075/0518    Western Rockhopper Penguin    Eudyptes chrysocome

(breeds Falkland Islands, Cape Horn)

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The species in Family: Diomedeidae – Albatrosses have been resequenced.

…………………………………………………………………….

083/0551    Campbell Albatross

has been lumped with and is now represented by a subspecies of:

083/0550    Black-browed Albatross   Thalassarche melanophris

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Family: Oceanitidae – Southern Storm Petrels has a new English name.

…………………………………………………………………….

Family: Oceanitidae – Southern Storm Petrels has been partially resequenced.

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The species in Family: Hydrobatidae – Northern Storm Petrels have been resequenced.

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Family: Petrels, Shearwaters, and Diving Petrels has a modified English name.

…………………………………………………………………….

The species in Family: Petrels, Shearwaters, and Diving Petrels have been resequenced.

…………………………………………………………………….

091/0635    Balearic Shearwater

has been lumped with and is now represented by a subspecies of:

091/0634    Yelkouan Shearwater

which has a new English name:

091/0634    Mediterranean Shearwater    Puffinus yelkouan

…………………………………………………………………….

091/0595    Fea’s Petrel

has a new English name:

091/0595    Cape Verde Petrel    Pterodroma feae

…………………………………………………………………….

091/059F    Vanuatu Petrel

has been lumped with and is now represented by a subspecies of:

091/0608    White-necked Petrel    Pterodroma cervicalis

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Family: Ciconiidae – Storks has been partially resequenced.

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The species in Family: Fregatidae – Frigatebirds have been resequenced.

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Family: Sulidae – Boobies and Gannets has a new English name.

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Family: Sulidae – Boobies and Gannets has been partially resequenced.

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Family: Anhingidae – Anhinga and Darters has a modified English name.

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Family: Phalacrocoracidae – Cormorants and Shags has a modified English name.

…………………………………………………………………….

The species in Family: Phalacrocoracidae – Cormorants and Shags have been resequenced.

…………………………………………………………………….

146/087E    Foveaux Shag

has been lumped with and is now represented by a subspecies of:

146/0878    Otago Shag

which has a new English name:

146/0878    Stewart Island Shag    Leucocarbo chalconotus

…………………………………………………………………….

146/0879    Chatham Islands Shag

has a new English name:

146/0879    Chatham Shag    Leucocarbo onslowi

…………………………………………………………………….

The following have been lumped with and are now each represented by a subspecies of:

146/0870    Imperial Shag    Leucocarbo atriceps

———————————————–

146/0871    South Georgia Shag

146/0874    Crozet Shag

146/0872    Antarctic Shag

146/0876    Kerguelen Shag

146/0873    Heard Island Shag

146/0875    Macquarie Shag

…………………………………………………………………….

146/0866    White-breasted Cormorant

has been lumped with and is now represented by a subspecies of:

146/0865    Great Cormorant    Phalacrocorax carbo

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Family: Threskiornithidae – Ibises and Spoonbills has a modified English name.

…………………………………………………………………….

The species in Family: Threskiornithidae – Ibises and Spoonbills have been resequenced.

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The species in Family: Pelecanidae – Pelicans have been resequenced.

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Family: Ardeidae – Herons, Egrets, and Bitterns has a new English name.

…………………………………………………………………….

Family: Ardeidae – Herons, Egrets, and Bitterns has been partially resequenced.

…………………………………………………………………….

120/0805    Dimorphic Egret

has been lumped with and is now represented by a subspecies of:

120/0803    Little Egret    Egretta garzetta

…………………………………………………………………….

120/077E    Little Heron    Butorides atricapilla

(all birds except those regularly present in Panama, South America)

has been split from:

120/0778    Striated Heron    Butorides striata

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Family: Caprimulgidae – Nightjars and Nighthawks has a new English name.

…………………………………………………………………….

The species in Family: Caprimulgidae – Nightjars and Nighthawks have been resequenced.

…………………………………………………………………….

339/2430    New Caledonian Nightjar    Eurostopodus exul

(New Caledonia – France)

is annotated as possibly extinct in the AviList and has been removed.

…………………………………………………………………….

The following species have been ascribed to a new or different genus:

339/244Y    Roraiman Nightjar     Tepuiornis whitelyi

339/2454    Tschudi’s Nightjar     Quechuavis decussata

339/2458    Spot-tailed Nightjar     Antiurus maculicaudus

339/245Y    Long-trained Nightjar     Hydropsalis forcipata

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Family: Nyctibiidae – Potoos has been partially resequenced.

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Family: Podargidae – Frogmouths has been partially resequenced.

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The species in Family: Aegothelidae – Owlet-nightjars have been resequenced.

…………………………………………………………………….

343/2526    New Caledonian Owlet-nightjar    Aegotheles savesi

(New Caledonia – France)

is annotated as possibly extinct in the AviList and has been removed.

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351/2619    Salim Ali’s Swift

351/261F    Blyth’s Swift

351/261Y    Cook’s Swift

have been lumped with and are now each represented by a subspecies of:

351/2618    Pacific Swift

which has a new English name:

351/2618    Fork-tailed Swift    Apus pacificus

…………………………………………………………………….

351/2615    Fernando Po Swift

has been lumped with and is now represented by a subspecies of:

351/2613    African Black Swift    Apus barbatus

…………………………………………………………………….

351/254Y    Cave Swiflet

has a new English name:

351/254Y    Linchi Swiftlet    Collocalia linchi

…………………………………………………………………….

351/2571    Marquesan Swiftlet

has been lumped with and is now represented by a subspecies of:

351/256Y    Tahiti Swiftlet

which has a new English name:

351/256Y    Polynesian Swiftlet    Aerodramus leucophaeus

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Family: Trochilidae – Hummingbirds has been partially resequenced.

…………………………………………………………………….

355/2840    Turquoise-throated Puffleg    Eriocnemis godini    (nw Ecuador)

is annotated as possibly extinct in the AviList and has been removed.

…………………………………………………………………….

355/278F    Grey-tailed Mountaingem

has been lumped with and is now represented by a subspecies of:

355/2789    White-throated Mountaingem    Lampornis castaneoventris

…………………………………………………………………….

355/2663    Wedge-tailed Sabrewing

has been lumped with and is now represented by a subspecies of:

355/2662    Curve-winged Sabrewing

which has a new English name:

355/2662    Wedge-tailed Sabrewing    Pampa curvipennis

…………………………………………………………………….

355/2767    Cinnamon-sided Hummingbird

has been lumped with and is now represented by a subspecies of:

355/2766    Green-fronted Hummingbird    Ramosomyia viridifrons