- Baillon's Crake
- Baird's Sandpiper
- Band-rumped Storm Petrel
- Bar-breasted Firefinch
- Bar-tailed Godwit
- Barau's Petrel
- Bare-faced Curassow
- Barnacle Goose
- Bateleur
- Berthelot's Pipit
- Black-bellied Storm Petrel
- Black-breasted Buzzard
- Black-browed Albatross
- Black-casqued Hornbill
- Black-collared Hawk
- Black-crowned Tchagra
- Black-faced Bunting
- Black-faced Canary
- Black-faced Cormorant
- Black-faced Sheathbill
- Black-headed Bee-eater
- Black-headed Gull
- Black-headed Honeyeater
- Black-hooded Oriole
- Black-legged Kittiwake
- Black-necked Weaver
- Black-winged Red Bishop
- Black Bee-eater
- Black Guillemot
- Black Saw-wing
- Black Sparrowhawk
- Black Vulture
- Blackstart
- Blue-billed Malimbe
- Blue-breasted Bee-eater
- Blue-cheeked Bee-eater
- Blue-headed Bee-eater
- Blue-headed Coucal
- Blue-spotted Wood Dove
- Blue-throated Roller
- Blue Cuckooshrike
- Blue Petrel
- Bohemian Waxwing
- Boreal Owl
- Brown-throated Wattle-eye
- Brown Falcon
- Brown Goshawk
- Brown Honeyeater
- Brown Skua (lonnbergi)
- Brown Thornbill
- Brush Bronzewing
- Buff-throated Sunbird
- Bulwer's Petrel
- Bush Stone-curlew