- Baglafecht Weaver
- Baillon's Crake
- Baird's Trogon
- Baltimore Oriole
- Bananaquit
- Band-tailed Pigeon
- Banded Martin
- Banded Parisoma
- Banded Prinia
- Bar-breasted Firefinch
- Bar-headed Goose
- Bar-tailed Godwit
- Bar-tailed Lark
- Bar-tailed Trogon
- Bar-winged Flycatcher-shrike
- Barbary Partridge
- Bare-eyed Thrush
- Bare-faced Go-away-bird
- Bare-throated Tiger Heron
- Barn Swallow
- Barnacle Goose
- Barred Antshrike
- Barred Buttonquail
- Bat Falcon
- Bateleur
- Bay Wren
- Bearded Barbet
- Bearded Reedling
- Bearded Scrub Robin
- Bearded Vulture
- Bearded Woodpecker
- Beaudouin's Snake Eagle
- Beautiful Sunbird
- Belted Kingfisher
- Berthelot's Pipit
- Besra
- Black-and-white-casqued Hornbill
- Black-and-white Mannikin
- Black-and-white Shrike-flycatcher
- Black-and-white Warbler
- Black-backed Puffback
- Black-backed Puffback (affinis)
- Black-bellied Bustard
- Black-bellied Sandgrouse
- Black-bellied Starling
- Black-bellied Sunbird
- Black-bellied Wren
- Black-billed Barbet
- Black-billed Nightingale-Thrush
- Black-billed Weaver
- Black-billed Wood Dove
- Black-breasted Wood Quail
- Black-capped Bulbul
- Black-capped Flycatcher
- Black-capped Social Weaver
- Black-cheeked Ant Tanager
- Black-cheeked Warbler
- Black-cheeked Waxbill
- Black-cheeked Woodpecker
- Black-chested Snake Eagle
- Black-chinned Siskin
- Black-collared Apalis
- Black-collared Barbet
- Black-collared Hawk
- Black-cowled Oriole
- Black-crested Coquette
- Black-crowned Night Heron
- Black-crowned Tchagra
- Black-crowned Waxbill
- Black-eared Warbler
- Black-faced Rufous Warbler
- Black-faced Sandgrouse
- Black-faced Solitaire
- Black-fronted Bushshrike
- Black-headed Apalis
- Black-headed Bunting
- Black-headed Cuckooshrike
- Black-headed Gonolek
- Black-headed Gull
- Black-headed Heron
- Black-headed Ibis
- Black-headed Lapwing
- Black-headed Mountain Greenbul
- Black-headed Oriole
- Black-headed Saltator
- Black-headed Trogon
- Black-headed Waxbill
- Black-headed Weaver
- Black-hooded Antshrike
- Black-hooded Oriole
- Black-legged Kittiwake
- Black-lored Babbler
- Black-necked Grebe
- Black-necked Stilt
- Black-necked Weaver
- Black-rumped Waxbill
- Black-striped Sparrow
- Black-tailed Godwit
- Black-throated Apalis
- Black-throated Barbet
- Black-throated Blue Warbler
- Black-throated Loon
- Black-throated Munia
- Black-throated Wattle-eye
- Black-winged Kite
- Black-winged Lapwing
- Black-winged Red Bishop
- Black-winged Stilt
- Black Bee-eater
- Black Bishop
- Black Bittern
- Black Boubou
- Black Crake
- Black Crowned Crane
- Black Cuckoo
- Black Cuckooshrike
- Black Eagle
- Black Grouse
- Black Guan
- Black Guillemot
- Black Hawk-Eagle
- Black Heron
- Black Kite
- Black Phoebe
- Black Redstart
- Black Saw-wing
- Black Skimmer
- Black Sparrowhawk
- Black Stork
- Black Swan
- Black Tern
- Black Vulture
- Black Wheatear
- Black Woodpecker
- Blackcap Babbler
- Blackish Oystercatcher
- Blacksmith Lapwing
- Blue-and-white Swallow
- Blue-billed Teal
- Blue-black Grassquit
- Blue-breasted Bee-eater
- Blue-capped Cordon-bleu
- Blue-cheeked Bee-eater
- Blue-faced Malkoha
- Blue-grey Tanager
- Blue-headed Bee-eater
- Blue-headed Coucal
- Blue-headed Sunbird
- Blue-naped Mousebird
- Blue-shouldered Robin-Chat
- Blue-spotted Wood Dove
- Blue-tailed Bee-eater
- Blue-throated Brown Sunbird
- Blue-throated Sapphire
- Blue-throated Toucanet
- Blue-winged Teal
- Blue Dacnis
- Blue Ground Dove
- Blue Malkoha
- Blue Quail
- Blue Rock Thrush
- Blue Waxbill
- Bluethroat
- Bluethroat (cyanecula)
- Bluish-grey Saltator
- Blyth's Reed Warbler
- Boat-billed Flycatcher
- Boat-billed Heron
- Bocage's Bushshrike
- Bohemian Waxwing
- Booted Eagle
- Boran Cisticola
- Boreal Owl
- Brahminy Kite
- Brambling
- Brant Goose
- Brant Goose (nigricans)
- Brimstone Canary
- Bristle-crowned Starling
- Broad-billed Motmot
- Broad-billed Roller
- Broad-billed Sandpiper
- Broad-winged Hawk
- Bronze-tailed Plumeleteer
- Bronze-tailed Starling
- Bronze Mannikin
- Bronze Sunbird
- Bronzed Cowbird
- Brown-backed Honeybird
- Brown-backed Scrub Robin
- Brown-backed Woodpecker
- Brown-breasted Barbet
- Brown-breasted Flycatcher
- Brown-capped Babbler
- Brown-capped Weaver
- Brown-chested Alethe
- Brown-crowned Tchagra
- Brown-eared Woodpecker
- Brown-headed Barbet
- Brown-headed Parrot
- Brown-hooded Gull
- Brown-hooded Kingfisher
- Brown-hooded Parrot
- Brown-necked Raven
- Brown-tailed Rock Chat
- Brown-throated Martin
- Brown-throated Wattle-eye
- Brown Babbler
- Brown Booby
- Brown Fish Owl
- Brown Illadopsis
- Brown Jay
- Brown Noddy
- Brown Parisoma
- Brown Pelican
- Brown Shrike
- Brown Snake Eagle
- Brown Twinspot
- Brown Violetear
- Brown Woodland Warbler
- Brubru
- Bruce's Green Pigeon
- Budgerigar
- Buff-bellied Warbler
- Buff-crested Bustard
- Buff-rumped Warbler
- Buff-spotted Woodpecker
- Buff-throated Saltator
- Buff-winged Cinclodes
- Bufflehead
- Bullock's Oriole