- Bananaquit
- Barn Swallow
- Barred Antshrike
- Bat Falcon
- Bay-headed Tanager
- Bicolored Conebill
- Black-bellied Whistling Duck
- Black-capped Becard
- Black-capped Donacobius
- Black-chinned Antbird
- Black-collared Hawk
- Black-crested Antshrike
- Black-crowned Tityra
- Black-eared Fairy
- Black-faced Tanager
- Black-headed Antbird
- Black-headed Parrot
- Black-necked Aracari
- Black-necked Stilt
- Black-spotted Barbet
- Black-tailed Tityra
- Black-tailed Trogon
- Black-throated Antbird
- Black-throated Mango
- Black-whiskered Vireo
- Black Hawk-Eagle
- Black Skimmer
- Black Vulture
- Blackish-grey Antshrike
- Blackish Antbird
- Blackpoll Warbler
- Blue-backed Manakin
- Blue-black Grassquit
- Blue-black Grosbeak
- Blue-chinned Sapphire
- Blue-grey Tanager
- Blue-headed Parrot
- Blue-tailed Emerald
- Blue-winged Teal
- Blue Dacnis
- Boat-billed Flycatcher
- Bran-colored Flycatcher
- Bright-rumped Attila
- Brown-bellied Antwren
- Brown-chested Martin
- Brown-crested Flycatcher
- Brown-throated Parakeet
- Brown Pelican
- Buff-breasted Wren
- Buff-cheeked Greenlet
- Buff-throated Saltator
- Buff-throated Woodcreeper
- Burnished-buff Tanager
- Burrowing Owl