- Bald Eagle
- Bananaquit
- Bar-tailed Godwit
- Barn Swallow
- Barrow's Goldeneye
- Bearded Reedling
- Black-billed Magpie
- Black-collared Starling
- Black-crowned Night Heron
- Black-crowned Sparrow-Lark
- Black-faced Grassquit
- Black-headed Gull
- Black-legged Kittiwake
- Black-necked Grebe
- Black-necked Stilt
- Black-tailed Godwit
- Black-tailed Gull
- Black-throated Sparrow
- Black-winged Kite
- Black-winged Stilt
- Black Guillemot
- Black Noddy
- Black Phoebe
- Black Redstart
- Black Stork
- Black Swan
- Black Wheatear
- Blue-grey Gnatcatcher
- Bluethroat
- Brambling
- Brant Goose
- Brewer's Blackbird
- Broad-tailed Hummingbird
- Brown-headed Cowbird
- Brown Booby
- Brown Creeper
- Brown Noddy
- Bufflehead
- Bullock's Oriole