- Baglafecht Weaver
- Baird's Sandpiper
- Bald Eagle
- Balearic Shearwater
- Baltimore Oriole
- Bananaquit
- Band-tailed Guan
- Band-tailed Pigeon
- Band-tailed Seedeater
- Banded Barbet
- Banded Martin
- Banded Parisoma
- Banded Woodpecker
- Bank Cormorant
- Bar-backed Partridge
- Bar-breasted Firefinch
- Bar-headed Goose
- Bar-tailed Godwit
- Bar-tailed Lark
- Bar-throated Apalis
- Bar-winged Flycatcher-shrike
- Barbary Partridge
- Bare-faced Go-away-bird
- Bare-faced Ground Dove
- Bare-faced Ibis
- Bare-throated Tiger Heron
- Barn Swallow
- Barnacle Goose
- Barred Antshrike
- Barred Eagle-Owl
- Barred Fruiteater
- Barred Warbler
- Bateleur
- Bay-breasted Warbler
- Bay-headed Tanager
- Bay Wren
- Bearded Barbet
- Bearded Reedling
- Bearded Vulture
- Bearded Woodpecker
- Beaudouin's Snake Eagle
- Beautiful Sunbird
- Belcher's Gull
- Belted Kingfisher
- Bennett's Woodpecker
- Berthelot's Pipit
- Bicolored Antbird
- Bicolored Wren
- Black-and-crimson Oriole
- Black-and-white-casqued Hornbill
- Black-and-white Mannikin
- Black-and-white Warbler
- Black-and-yellow Phainoptila
- Black-backed Grosbeak
- Black-backed Puffback
- Black-bellied Bustard
- Black-bellied Malkoha
- Black-bellied Sandgrouse
- Black-bellied Starling
- Black-bellied Whistling Duck
- Black-billed Barbet
- Black-billed Nightingale-Thrush
- Black-billed Shrike-Tyrant
- Black-billed Thrush
- Black-billed Wood Hoopoe
- Black-browed Albatross
- Black-browed Barbet
- Black-capped Chickadee
- Black-capped Kingfisher
- Black-capped Social Weaver
- Black-capped Tanager
- Black-cheeked Woodpecker
- Black-chested Buzzard-Eagle
- Black-chested Jay
- Black-chested Prinia
- Black-chested Snake Eagle
- Black-collared Barbet
- Black-cowled Oriole
- Black-crested Bulbul
- Black-crested Warbler
- Black-crowned Night Heron
- Black-crowned Sparrow-Lark
- Black-crowned Tchagra
- Black-crowned Tityra
- Black-crowned Waxbill
- Black-faced Waxbill
- Black-headed Bunting
- Black-headed Gonolek
- Black-headed Gull
- Black-headed Heron
- Black-headed Lapwing
- Black-headed Oriole
- Black-headed Saltator
- Black-headed Tanager
- Black-headed Weaver
- Black-hooded Antshrike
- Black-legged Kittiwake
- Black-lored Babbler
- Black-naped Monarch
- Black-naped Oriole
- Black-necked Grebe
- Black-necked Stilt
- Black-necked Weaver
- Black-rumped Waxbill
- Black-striped Sparrow
- Black-tailed Godwit
- Black-thighed Grosbeak
- Black-throated Barbet
- Black-throated Blue Warbler
- Black-throated Canary
- Black-throated Flowerpiercer
- Black-throated Green Warbler
- Black-throated Sunbird
- Black-winged Cuckooshrike
- Black-winged Ground Dove
- Black-winged Kite
- Black-winged Lapwing
- Black-winged Lovebird
- Black-winged Saltator
- Black-winged Stilt
- Black Bee-eater
- Black Bishop
- Black Coucal
- Black Crake
- Black Crowned Crane
- Black Drongo
- Black Flowerpiercer
- Black Grouse
- Black Guan
- Black Harrier
- Black Heron
- Black Kite
- Black Phoebe
- Black Redstart
- Black Scimitarbill
- Black Scrub Robin
- Black Siskin
- Black Skimmer
- Black Stork
- Black Swan
- Black Tern
- Black Vulture
- Black Wheatear
- Black Woodpecker
- Blackburnian Warbler
- Blackish Oystercatcher
- Blacksmith Lapwing
- Blackstart
- Blanford's Lark (erlangeri)
- Blue-and-white Swallow
- Blue-and-yellow Macaw
- Blue-and-yellow Tanager
- Blue-backed Conebill
- Blue-bellied Roller
- Blue-billed Teal
- Blue-black Grassquit
- Blue-breasted Kingfisher
- Blue-capped Tanager
- Blue-cheeked Bee-eater
- Blue-eared Kingfisher
- Blue-grey Tanager
- Blue-headed Coucal
- Blue-headed Vireo
- Blue-moustached Bee-eater
- Blue-naped Chlorophonia
- Blue-naped Mousebird
- Blue-necked Tanager
- Blue-spotted Wood Dove
- Blue-tailed Bee-eater
- Blue-tailed Emerald
- Blue-throated Bee-eater
- Blue-throated Brown Sunbird
- Blue-throated Toucanet
- Blue-winged Goose
- Blue-winged Leafbird
- Blue-winged Minla
- Blue-winged Mountain Tanager
- Blue-winged Teal
- Blue Crane
- Blue Dacnis
- Blue Jay
- Blue Nuthatch
- Blue Rock Thrush
- Blue Waxbill
- Blue Whistling Thrush
- Bluethroat
- Bluish-grey Saltator
- Blyth's Paradise Flycatcher
- Boat-billed Heron
- Bocage's Bushshrike
- Bokmakierie
- Bonaparte's Gull
- Bonelli's Eagle
- Booted Eagle
- Boreal Owl
- Brahminy Kite
- Brambling
- Brant Goose
- Brazilian Teal
- Bright-rumped Yellow Finch
- Brimstone Canary
- Bristle-crowned Starling
- Broad-billed Motmot
- Broad-billed Roller
- Broad-billed Sandpiper
- Broad-winged Hawk
- Bronze-winged Jacana
- Bronze Mannikin
- Bronze Sunbird
- Bronzy Hermit
- Bronzy Inca
- Brown-banded Antpitta
- Brown-capped Vireo
- Brown-crested Flycatcher
- Brown-crowned Tchagra
- Brown-headed Gull
- Brown-headed Parrot
- Brown-hooded Kingfisher
- Brown-rumped Seedeater
- Brown-throated Martin
- Brown-throated Sunbird
- Brown-throated Wattle-eye
- Brown Babbler
- Brown Parisoma
- Brown Pelican
- Brown Shrike
- Brown Skua
- Brown Twinspot
- Brown Violetear
- Brown Wood Owl
- Brown Woodland Warbler
- Brubru
- Bruce's Green Pigeon
- Buff-bellied Warbler
- Buff-breasted Mountain Tanager
- Buff-breasted Sandpiper
- Buff-crested Bustard
- Buff-necked Woodpecker
- Buff-rumped Warbler
- Buff-rumped Woodpecker
- Buff-tailed Coronet
- Buff-throated Saltator
- Buff-vented Bulbul
- Buff-winged Starfrontlet
- Buffy Helmetcrest
- Burchell's Coucal
- Burchell's Sandgrouse