- Baglafecht Weaver
- Baillon's Crake
- Bananaquit
- Bare-faced Go-away-bird
- Bare-necked Fruitcrow
- Barn Swallow
- Barred Antshrike
- Bat Falcon
- Bateleur
- Bearded Tachuri
- Bearded Vulture
- Bearded Woodpecker
- Beautiful Sunbird
- Bicolored Conebill
- Black-bellied Bustard
- Black-billed Wood Dove
- Black-capped Donacobius
- Black-chested Snake Eagle
- Black-collared Barbet
- Black-collared Hawk
- Black-crested Antshrike
- Black-crowned Night Heron
- Black-crowned Tchagra
- Black-crowned Tityra
- Black-faced Hawk
- Black-faced Sandgrouse
- Black-faced Tanager
- Black-faced Waxbill
- Black-headed Antbird
- Black-headed Heron
- Black-headed Parrot
- Black-lored Babbler
- Black-necked Aracari
- Black-necked Grebe
- Black-necked Stilt
- Black-necked Weaver
- Black-tailed Godwit
- Black-tailed Trogon
- Black-throated Barbet
- Black-throated Mango
- Black-winged Kite
- Black-winged Pratincole
- Black-winged Stilt
- Black Caracara
- Black Crake
- Black Curassow
- Black Hawk-Eagle
- Black Kite
- Black Nunbird
- Black Skimmer
- Black Vulture
- Blacksmith Lapwing
- Blue-and-yellow Macaw
- Blue-billed Teal
- Blue-black Grassquit
- Blue-breasted Bee-eater
- Blue-capped Cordon-bleu
- Blue-cheeked Bee-eater
- Blue-grey Tanager
- Blue-naped Mousebird
- Blue Coua
- Blue Dacnis
- Boat-billed Flycatcher
- Bonelli's Eagle
- Booted Eagle
- Brambling
- Broad-billed Roller
- Broad-winged Hawk
- Brown-chested Martin
- Brown-throated Parakeet
- Brown Noddy
- Brown Pelican
- Brown Snake Eagle
- Buff-throated Saltator
- Burnished-buff Tanager
- Burrowing Owl