- Bar-headed Goose
- Bar-tailed Godwit
- Barbary Partridge
- Barn Swallow
- Barnacle Goose
- Barrow's Goldeneye
- Bearded Reedling
- Belted Kingfisher
- Berthelot's Pipit
- Black-capped Chickadee
- Black-crowned Night Heron
- Black-headed Bunting
- Black-headed Gull
- Black-legged Kittiwake
- Black-necked Grebe
- Black-necked Swan
- Black-tailed Godwit
- Black-throated Loon
- Black-winged Kite
- Black-winged Stilt
- Black Guillemot
- Black Kite
- Black Redstart
- Black Stork
- Black Swan
- Black Tern
- Black Woodpecker
- Blue Jay
- Blue Rock Thrush
- Blyth's Reed Warbler
- Booted Eagle
- Brant Goose
- Bufflehead