- Bananaquit
- Bar-headed Goose
- Bar-tailed Godwit
- Barn Swallow
- Barnacle Goose
- Bearded Barbet
- Bearded Reedling
- Beaudouin's Snake Eagle
- Beautiful Sunbird
- Bianchi's Warbler
- Black-billed Gull
- Black-billed Wood Dove
- Black-casqued Hornbill
- Black-collared Starling
- Black-crowned Night Heron
- Black-crowned Tchagra
- Black-faced Firefinch
- Black-faced Grassquit
- Black-headed Gull
- Black-headed Heron
- Black-headed Lapwing
- Black-headed Weaver
- Black-legged Kittiwake
- Black-naped Oriole
- Black-necked Grebe
- Black-necked Stilt
- Black-rumped Waxbill
- Black-tailed Godwit
- Black-throated Bushtit
- Black-throated Loon
- Black-whiskered Vireo
- Black-winged Kite
- Black-winged Stilt
- Black Drongo
- Black Guillemot
- Black Heron
- Black Kite
- Black Redstart
- Black Swan
- Blue-bellied Roller
- Blue-breasted Kingfisher
- Blue-cheeked Bee-eater
- Blue-winged Teal
- Blue Rock Thrush
- Blue Whistling Thrush
- Bluethroat (cyanecula)
- Blyth's Paradise Flycatcher
- Bohemian Waxwing
- Bonaparte's Gull
- Booted Eagle
- Brambling
- Brant Goose
- Broad-billed Roller
- Bronze Mannikin
- Brown-breasted Bulbul
- Brown-eared Bulbul
- Brown-throated Sunbird
- Brown Dipper
- Brown Pelican
- Brown Shrike
- Brown Snake Eagle
- Brown Trembler