- Balearic Shearwater
- Bananaquit
- Barn Swallow
- Black-crowned Night Heron
- Black-faced Grassquit
- Black-headed Gull
- Black-legged Kittiwake
- Black-necked Grebe
- Black-necked Stilt
- Black-throated Loon
- Black-whiskered Vireo
- Black-winged Stilt
- Black Redstart
- Blue-headed Hummingbird
- Blue-winged Teal
- Bobolink
- Boreal Owl
- Brambling
- Bridled Tern
- Broad-winged Hawk
- Brown Booby
- Brown Noddy
- Brown Pelican
- Brown Trembler
- Buff-breasted Sandpiper