- Baglafecht Weaver
- Bananaquit
- Band-rumped Swift
- Bank Myna
- Bar-headed Goose
- Bar-tailed Godwit
- Barbary Partridge
- Barn Swallow
- Barnacle Goose
- Barred Antshrike
- Barred Buttonquail
- Barred Forest Falcon
- Bat Falcon
- Bateleur
- Bay-headed Tanager
- Baya Weaver
- Bearded Bellbird
- Belcher's Gull
- Belted Kingfisher
- Berthelot's Pipit
- Bewick's Wren
- Bicolored Conebill
- Black-and-white Warbler
- Black-banded Owl
- Black-bellied Bustard
- Black-bellied Cuckoo
- Black-bellied Sandgrouse
- Black-bellied Whistling Duck
- Black-breasted Puffbird
- Black-capped Donacobius
- Black-cheeked Woodpecker
- Black-chested Buzzard-Eagle
- Black-chested Jay
- Black-chested Snake Eagle
- Black-chinned Antbird
- Black-collared Hawk
- Black-collared Swallow
- Black-crested Antshrike
- Black-crested Bulbul
- Black-crowned Antshrike
- Black-crowned Night Heron
- Black-crowned Palm-tanager
- Black-eared Fairy
- Black-faced Antthrush
- Black-faced Grassquit
- Black-faced Solitaire
- Black-faced Tanager
- Black-faced Waxbill
- Black-headed Antbird
- Black-headed Gull
- Black-headed Heron
- Black-headed Ibis
- Black-headed Oriole
- Black-headed Tody-Flycatcher
- Black-hooded Oriole
- Black-necked Aracari
- Black-necked Grebe
- Black-necked Stilt
- Black-necked Weaver
- Black-rumped Flameback
- Black-spotted Barbet
- Black-tailed Godwit
- Black-tailed Leaftosser
- Black-tailed Tityra
- Black-tailed Trogon
- Black-throated Antbird
- Black-throated Antshrike
- Black-throated Blue Warbler
- Black-throated Green Warbler
- Black-throated Mango
- Black-throated Saltator
- Black-whiskered Vireo
- Black-winged Kite
- Black-winged Lapwing
- Black-winged Stilt
- Black Caracara
- Black Crake
- Black Curassow
- Black Drongo
- Black Flowerpiercer
- Black Hawk-Eagle
- Black Kite
- Black Kite (govinda)
- Black Nunbird
- Black Phoebe
- Black Redstart
- Black Skimmer
- Black Swan
- Black Tern
- Black Vulture
- Black Wheatear
- Blackburnian Warbler
- Blackish Antbird
- Blackish Nightjar
- Blackish Oystercatcher
- Blackpoll Warbler
- Blacksmith Lapwing
- Blue-and-yellow Macaw
- Blue-backed Manakin
- Blue-black Grassquit
- Blue-black Grosbeak
- Blue-capped Cordon-bleu
- Blue-cheeked Amazon
- Blue-chested Hummingbird
- Blue-chinned Sapphire
- Blue-faced Malkoha
- Blue-grey Gnatcatcher
- Blue-grey Tanager
- Blue-headed Parrot
- Blue-naped Mousebird
- Blue-tailed Bee-eater
- Blue-tailed Emerald
- Blue-winged Teal
- Blue Dacnis
- Blue Grosbeak
- Boat-billed Flycatcher
- Boat-tailed Grackle
- Bonelli's Eagle
- Booted Eagle
- Brahminy Kite
- Brahminy Starling
- Brandt's Cormorant
- Brant Goose
- Brazilian Teal
- Bridled Quail-Dove
- Bridled Tern
- Bright-rumped Attila
- Broad-billed Tody
- Broad-winged Hawk
- Bronze Mannikin
- Brown-bellied Stipplethroat
- Brown-capped Tyrannulet
- Brown-chested Martin
- Brown-crested Flycatcher
- Brown-headed Barbet
- Brown-hooded Gull
- Brown-throated Parakeet
- Brown-throated Sunbird
- Brown Booby
- Brown Noddy
- Brown Pelican
- Brown Rock Chat
- Brown Shrike
- Brown Trembler
- Buff-bellied Warbler
- Buff-breasted Wren
- Buff-necked Ibis
- Buff-throated Saltator
- Buff-throated Woodcreeper
- Burrowing Owl