- Bali Myna
- Baltimore Oriole
- Bananaquit
- Bank Cormorant
- Bar-headed Goose
- Bare-faced Curassow
- Bare-throated Tiger Heron
- Barn Swallow
- Barred Honey Buzzard
- Bat Falcon
- Bateleur
- Bay-headed Tanager
- Bearded Barbet
- Beautiful Sunbird
- Berthelot's Pipit
- Black-bellied Whistling Duck
- Black-cheeked Woodpecker
- Black-chested Buzzard-Eagle
- Black-collared Hawk
- Black-crowned Night Heron
- Black-faced Ibis
- Black-headed Bunting
- Black-headed Gull
- Black-headed Heron
- Black-headed Ibis
- Black-headed Oriole
- Black-headed Trogon
- Black-legged Kittiwake
- Black-necked Grebe
- Black-necked Stilt
- Black-necked Swan
- Black-winged Kite
- Black-winged Lovebird
- Black-winged Stilt
- Black Crake
- Black Drongo
- Black Guillemot
- Black Kite
- Black Kite (govinda)
- Black Skimmer
- Black Swan
- Black Tern
- Black Vulture
- Blacksmith Lapwing
- Blue-and-yellow Macaw
- Blue-cheeked Bee-eater
- Blue-crowned Chlorophonia
- Blue-footed Booby
- Blue-grey Tanager
- Blue-headed Parrot
- Blue-throated Bee-eater
- Blue-winged Mountain Tanager
- Blue Crane
- Boat-tailed Grackle
- Bokmakierie
- Brahminy Starling
- Bridled Tern
- Brimstone Canary
- Bronze-winged Duck
- Brown Booby
- Brown Noddy
- Brown Pelican
- Bruce's Green Pigeon
- Buff-necked Ibis
- Buff-throated Saltator
- Buff-winged Cinclodes
- Burrowing Owl