- Baillon's Crake
- Balearic Shearwater
- Barn Swallow
- Bearded Reedling
- Black-crowned Night Heron
- Black-headed Bunting
- Black-headed Gull
- Black-legged Kittiwake
- Black-necked Grebe
- Black-tailed Godwit
- Black-winged Kite
- Black-winged Stilt
- Black Kite
- Black Redstart
- Black Swan
- Black Woodpecker
- Blue Rock Thrush
- Bluethroat
- Bohemian Waxwing
- Bonaparte's Gull
- Booted Eagle
- Brambling
- Brant Goose
- Broad-billed Sandpiper