Atlantic tarpon 
Atlantic titi 
Atlantic wolffish 
Atlantic yellow-nosed albatross 
Atlas pied flycatcher 
Atoll butterflyfish 
Atrato Glass Frog 
Atuen Antpitta 
Audouins gull 
Audubon's Warbler 
Augur buzzard 
Austral blackbird 
Austral negrito 
Austral pygmy owl 
Austral thrush 
Australasian bittern 
Australasian Darter 
Australasian Figbird 
Australasian gannet 
Australasian grebe 
Australasian Osprey 
Australasian pipit 
Australasian swamphen 
Australian Brushturkey