- Baird's Trogon
- Bald Eagle
- Baltimore Oriole
- Bananaquit
- Bar-headed Goose
- Bar-tailed Godwit
- Barbary Partridge
- Bare-faced Curassow
- Bare-throated Tiger Heron
- Barn Swallow
- Barnacle Goose
- Barred Antshrike
- Bateleur
- Bay-headed Tanager
- Bearded Reedling
- Beautiful Sunbird
- Bennett's Woodpecker
- Berthelot's Pipit
- Black-and-white Owl
- Black-backed Water Tyrant
- Black-bellied Bustard
- Black-bellied Starling
- Black-bellied Whistling Duck
- Black-billed Magpie
- Black-billed Wood Dove
- Black-capped Chickadee
- Black-capped Donacobius
- Black-capped Tanager
- Black-cheeked Woodpecker
- Black-chested Buzzard-Eagle
- Black-chested Prinia
- Black-chested Snake Eagle
- Black-collared Hawk
- Black-crowned Night Heron
- Black-crowned Tityra
- Black-faced Dacnis
- Black-faced Grosbeak
- Black-fronted Nunbird
- Black-headed Bunting
- Black-headed Gull
- Black-headed Heron
- Black-headed Trogon
- Black-hooded Antshrike
- Black-hooded Oriole
- Black-legged Kittiwake
- Black-necked Grebe
- Black-necked Stilt
- Black-necked Weaver
- Black-rumped Flameback
- Black-rumped Waxbill
- Black-striped Sparrow
- Black-tailed Godwit
- Black-throated Loon
- Black-winged Kite
- Black-winged Saltator
- Black-winged Stilt
- Black Crake
- Black Drongo
- Black Guan
- Black Guillemot
- Black Kite
- Black Kite (lineatus)
- Black Phoebe
- Black Redstart
- Black Skimmer
- Black Sparrowhawk
- Black Stork
- Black Swan
- Black Tern
- Black Vulture
- Black Woodpecker
- Blackburnian Warbler
- Blackcap Babbler
- Blacksmith Lapwing
- Blue-and-white Swallow
- Blue-and-yellow Macaw
- Blue-and-yellow Tanager
- Blue-bellied Roller
- Blue-capped Tanager
- Blue-cheeked Bee-eater
- Blue-grey Tanager
- Blue-tailed Bee-eater
- Blue-throated Sapphire
- Blue-winged Mountain Tanager
- Blue Jay
- Blue Rock Thrush
- Blue Waxbill
- Bluethroat
- Boat-billed Flycatcher
- Boat-billed Heron
- Bohemian Waxwing
- Bokmakierie
- Brahminy Kite
- Brambling
- Brant Goose
- Brewer's Blackbird
- Bright-rumped Attila
- Broad-billed Motmot
- Broad-billed Roller
- Bronzed Cowbird
- Brown-hooded Kingfisher
- Brown-hooded Parrot
- Brown-throated Martin
- Brown Babbler
- Brown Inca
- Brown Noddy
- Brown Pelican
- Brown Snake Eagle
- Brown Violetear
- Bruce's Green Pigeon
- Buff-necked Ibis
- Buff-rumped Warbler
- Buff-streaked Chat
- Buff-tailed Coronet
- Buff-throated Saltator
- Burchell's Coucal
- Burchell's Starling
- Bush Stone-curlew