Basra reed warbler 
Bassian Thrush 
Bat falcon 
Bat hawk 
Bat-Eared Fox 
Bateleur 
Bates's Sunbird 
Batess paradise flycatcher 
Bath's Blenny 
Bathypterois viridensis 
Batu Coris 
Batuna's Damselfish 
Baudin's Black Cockatoo 
Baudó guan 
Baudó oropendola 
Bay antpitta 
Bay Islands Forest Lizard 
Bay woodpecker 
Bay wren 
Bay-backed shrike 
Bay-breasted warbler 
Bay-headed Tanager 
Bay-vented cotinga 
Baya Weaver