- Acacia Pied Barbet
- Acorn Woodpecker
- African Darter
- African Dusky Flycatcher
- African Fish Eagle
- African Green Pigeon
- African Grey Hornbill
- African Harrier-Hawk
- African Hawk-Eagle
- African Jacana
- African Oystercatcher
- African Palm Swift
- African Pied Wagtail
- African Pipit
- African Red-eyed Bulbul
- African Stonechat
- African Woolly-necked Stork
- Agami Heron
- Alpine Accentor
- Alpine Swift
- Amazilia Hummingbird
- Amazon Kingfisher
- Amazonian Elaenia
- Amazonian Motmot
- Amazonian Trogon
- American Flamingo
- American Kestrel
- American Oystercatcher
- American Pygmy Kingfisher
- American Redstart
- American White Ibis
- American White Pelican
- Amethyst-throated Sunangel
- Amur Paradise Flycatcher
- Andean Cock-of-the-rock
- Andean Condor
- Andean Coot
- Andean Duck
- Andean Emerald
- Andean Flicker
- Andean Goose
- Andean Guan
- Andean Gull
- Andean Lapwing
- Andean Motmot
- Andean Negrito
- Andean Potoo
- Andean Swift
- Andean Teal
- Andean Tit-Spinetail
- Anhinga
- Ant-eating Chat
- Antillean Palm Swift
- Aquatic Warbler
- Arctic Tern
- Arrow-marked Babbler
- Ash-breasted Sierra Finch
- Ash-browed Spinetail
- Ashy-headed Tyrannulet
- Ashy Drongo
- Ashy Prinia
- Ashy Woodswallow
- Asian Brown Flycatcher
- Asian Fairy-bluebird
- Asian Golden Weaver
- Asian Green Bee-eater
- Asian Koel
- Asian Openbill
- Asian Palm Swift
- Atlantic Black-throated Trogon
- Atlantic Canary
- Atlantic Puffin
- Azure-winged Magpie
- Azure Jay