- Abdim's Stork
- Abyssinian Thrush
- Acacia Pied Barbet
- Acorn Woodpecker
- Adelaide's Warbler
- African Blue Tit
- African Citril
- African Collared Dove
- African Darter
- African Dusky Flycatcher
- African Fish Eagle
- African Green Pigeon
- African Grey Flycatcher
- African Grey Hornbill
- African Hawk-Eagle
- African Hoopoe
- African Olive Pigeon
- African Openbill
- African Palm Swift
- African Paradise Flycatcher
- African Pied Wagtail
- African Pipit
- African Pygmy Goose
- African Red-eyed Bulbul
- African Sacred Ibis
- African Scops Owl
- African Spoonbill
- African Wattled Lapwing
- African Wood Owl
- African Woolly-necked Stork
- Agami Heron
- Alexandrine Parakeet
- Allen's Hummingbird
- Alpine Accentor
- Alpine Chough
- Alpine Swift
- Altamira Oriole
- Amazon Kingfisher
- Amazonian Motmot
- Amazonian Pygmy Owl
- American Avocet
- American Bushtit
- American Coot
- American Crow
- American Flamingo
- American Goldfinch
- American Kestrel
- American Oystercatcher
- American Redstart
- American Robin
- American White Ibis
- American White Pelican
- American Yellow Warbler
- Amethyst Woodstar
- Amur Falcon
- Amur Stonechat
- Andean Avocet
- Andean Cock-of-the-rock
- Andean Condor
- Andean Coot
- Andean Duck
- Andean Flamingo
- Andean Flicker
- Andean Goose
- Andean Gull
- Andean Lapwing
- Andean Negrito
- Andean Teal
- Andean Tit-Spinetail
- Angola Swallow
- Anhinga
- Anianiau
- Anna's Hummingbird
- Anteater Chat
- Antillean Crested Hummingbird
- Antillean Palm Swift
- Apapane
- Aplomado Falcon
- Apostlebird
- Arabian Babbler
- Arabian Green Bee-eater
- Arafura Fantail
- Archbold's Newtonia
- Arctic Tern
- Arrow-marked Babbler
- Ash-throated Flycatcher
- Ashy-headed Goose
- Ashy Drongo
- Ashy Flycatcher
- Ashy Prinia
- Ashy Starling
- Asian Brown Flycatcher
- Asian Green Bee-eater
- Asian Koel
- Asian Openbill
- Atlantic Canary
- Atlantic Puffin
- Audouin's Gull
- Audubon's Oriole
- Augur Buzzard
- Australasian Darter
- Australasian Figbird
- Australasian Grebe
- Australasian Shoveler
- Australasian Swamphen
- Australian Brushturkey
- Australian Bustard
- Australian Crake
- Australian King Parrot
- Australian Logrunner
- Australian Magpie
- Australian Pelican
- Australian Pied Cormorant
- Australian Pipit
- Australian Raven
- Australian Ringneck
- Australian White Ibis
- Australian Zebra Finch
- Azores Bullfinch
- Azores Chaffinch
- Azure Tit