- Bananaquit
- Bare-throated Tiger Heron
- Barn Swallow
- Barnacle Goose
- Bay-headed Tanager
- Black-bellied Hummingbird
- Black-capped Flycatcher
- Black-capped Tanager
- Black-collared Hawk
- Black-crowned Night Heron
- Black-headed Gull
- Black-hooded Sierra Finch
- Black-tailed Gull
- Black-throated Mango
- Black-winged Stilt
- Black Vulture
- Blue-grey Tanager
- Blue-necked Tanager
- Blue-tailed Emerald
- Blue-throated Toucanet
- Boat-billed Heron
- Brown-backed Mockingbird
- Brown Violetear
- Burrowing Owl