- Baltimore Oriole
- Bar-tailed Godwit
- Barn Swallow
- Barnacle Goose
- Bearded Reedling
- Black-and-white Warbler
- Black-billed Cuckoo
- Black-capped Chickadee
- Black-crowned Night Heron
- Black-headed Gull
- Black-legged Kittiwake
- Black-necked Grebe
- Black-tailed Godwit
- Black-throated Green Warbler
- Black-winged Stilt
- Black Kite
- Black Redstart
- Black Stork
- Black Swan
- Black Woodpecker
- Blue Jay
- Blue Rock Thrush
- Bluethroat
- Bluethroat (cyanecula)
- Bonelli's Eagle
- Booted Eagle
- Brant Goose