- Bald Eagle
- Bar-tailed Godwit
- Barn Swallow
- Barnacle Goose
- Berthelot's Pipit
- Black-chested Prinia
- Black-chested Snake Eagle
- Black-crowned Night Heron
- Black-headed Gull
- Black-legged Kittiwake
- Black-necked Grebe
- Black-necked Stilt
- Black-tailed Godwit
- Black-winged Stilt
- Black Kite
- Black Redstart
- Black Stork
- Blacksmith Lapwing
- Blue Rock Thrush
- Bluethroat
- Bohemian Waxwing
- Booted Eagle
- Brambling
- Brant Goose
- Brewer's Blackbird
- Brown Snake Eagle
- Bufflehead