- Baglafecht Weaver
- Baltimore Oriole
- Bananaquit
- Band-tailed Manakin
- Band-tailed Pigeon
- Band-tailed Seedeater
- Banded Broadbill
- Banded Green Sunbird
- Banded Lapwing
- Banded Parisoma
- Bar-bellied Pitta
- Bar-breasted Piculet
- Bar-headed Goose
- Bar-tailed Cuckoo-Dove
- Bar-tailed Trogon
- Bar-throated Apalis
- Bar-throated Minla
- Bar-winged Flycatcher-shrike
- Bare-eyed Thrush
- Bare-faced Curassow
- Bare-faced Go-away-bird
- Bare-faced Ibis
- Bare-necked Fruitcrow
- Bare-throated Bellbird
- Bare-throated Tiger Heron
- Barn Swallow
- Barred Antshrike
- Barred Becard
- Barred Buttonquail
- Barred Cuckoo-Dove
- Barred Fruiteater
- Barred Long-tailed Cuckoo
- Barred Puffbird
- Bat Falcon
- Bay-headed Tanager
- Baya Weaver
- Bearded Barbet
- Bearded Guan
- Bearded Mountaineer
- Bearded Reedling
- Beautiful Firetail
- Beautiful Sunbird
- Beesley's Lark
- Belford's Melidectes
- Bernier's Teal
- Berthelot's Pipit
- Besra
- Bicolored Hawk
- Black-and-gold Cotinga
- Black-and-red Broadbill
- Black-and-white-casqued Hornbill
- Black-and-white Mannikin
- Black-and-yellow Phainoptila
- Black-and-yellow Tanager
- Black-backed Butcherbird
- Black-backed Puffback
- Black-bellied Bustard
- Black-bellied Cuckoo
- Black-bellied Sunbird
- Black-bellied Whistling Duck
- Black-billed Barbet
- Black-billed Nightingale-Thrush
- Black-billed Peppershrike
- Black-billed Scythebill
- Black-billed Shrike-Tyrant
- Black-billed Treehunter
- Black-billed Turaco
- Black-breasted Boatbill
- Black-breasted Puffbird
- Black-browed Fulvetta
- Black-capped Becard
- Black-capped Donacobius
- Black-capped Tanager
- Black-cheeked Warbler
- Black-cheeked Woodpecker
- Black-chested Jay
- Black-chested Snake Eagle
- Black-chinned Mountain Tanager
- Black-chinned Yuhina
- Black-collared Hawk
- Black-collared Starling
- Black-crested Bulbul
- Black-crested Tit-Tyrant
- Black-crowned Antshrike
- Black-crowned Night Heron
- Black-crowned Tityra
- Black-eared Barbet
- Black-eared Fairy
- Black-eared Hemispingus
- Black-eared Shrike-babbler
- Black-faced Cormorant
- Black-faced Cuckooshrike
- Black-faced Dacnis
- Black-faced Ibis
- Black-faced Solitaire
- Black-fronted Bushshrike
- Black-fronted Dotterel
- Black-fronted Nunbird
- Black-headed Gonolek
- Black-headed Gull
- Black-headed Heron
- Black-headed Honeyeater
- Black-headed Ibis
- Black-headed Lapwing
- Black-headed Oriole
- Black-headed Parrot
- Black-headed Parrotbill
- Black-headed Sibia
- Black-headed Trogon
- Black-headed Whistler
- Black-hooded Oriole
- Black-lored Babbler
- Black-masked Finch
- Black-naped Monarch
- Black-naped Oriole
- Black-necked Grebe
- Black-necked Red Cotinga
- Black-necked Stork
- Black-necked Weaver
- Black-rumped Waxbill
- Black-shouldered Kite
- Black-streaked Puffbird
- Black-striped Sparrow
- Black-striped Woodcreeper
- Black-tailed Crake
- Black-tailed Godwit
- Black-tailed Tityra
- Black-tailed Trainbearer
- Black-tailed Trogon
- Black-throated Apalis
- Black-throated Barbet
- Black-throated Brilliant
- Black-throated Flowerpiercer
- Black-throated Laughingthrush
- Black-throated Mango
- Black-throated Robin
- Black-throated Saltator
- Black-throated Sunbird
- Black-throated Wattle-eye
- Black-winged Cuckooshrike
- Black-winged Ground Dove
- Black-winged Kite
- Black-winged Lapwing
- Black-winged Red Bishop
- Black-winged Saltator
- Black-winged Stilt
- Black Baza
- Black Bee-eater
- Black Bishop
- Black Bittern
- Black Caracara
- Black Crake
- Black Crowned Crane
- Black Currawong
- Black Drongo
- Black Grouse
- Black Guan
- Black Hawk-Eagle
- Black Jacobin
- Black Kite
- Black Phoebe
- Black Redstart
- Black Sicklebill
- Black Skimmer
- Black Swan
- Black Vulture
- Black Woodpecker
- Blacksmith Lapwing
- Blaze-winged Parakeet
- Blue-and-black Tanager
- Blue-and-white Swallow
- Blue-and-yellow Macaw
- Blue-and-yellow Tanager
- Blue-backed Conebill
- Blue-banded Toucanet
- Blue-bearded Bee-eater
- Blue-black Grassquit
- Blue-black Grosbeak
- Blue-breasted Bee-eater
- Blue-capped Cordon-bleu
- Blue-capped Ifrit
- Blue-capped Motmot
- Blue-capped Tanager
- Blue-chested Hummingbird
- Blue-chinned Sapphire
- Blue-crowned Parakeet
- Blue-crowned Trogon
- Blue-faced Honeyeater
- Blue-faced Malkoha
- Blue-footed Booby
- Blue-fronted Lancebill
- Blue-grey Tanager
- Blue-headed Coucal
- Blue-headed Crested Flycatcher
- Blue-headed Parrot
- Blue-mantled Thornbill
- Blue-naped Chlorophonia
- Blue-naped Mousebird
- Blue-necked Tanager
- Blue-tailed Bee-eater
- Blue-tailed Emerald
- Blue-throated Barbet
- Blue-throated Bee-eater
- Blue-throated Blue Flycatcher
- Blue-throated Hillstar
- Blue-throated Toucanet
- Blue-winged Leafbird
- Blue-winged Macaw
- Blue-winged Minla
- Blue-winged Mountain Tanager
- Blue-winged Pitta
- Blue Cotinga
- Blue Coua
- Blue Dacnis
- Blue Ground Dove
- Blue Malkoha
- Blue Whistling Thrush
- Bluethroat
- Bluish-fronted Jacamar
- Bluish-grey Saltator
- Bluish-slate Antshrike
- Bluish Flowerpiercer
- Blyth's Hornbill
- Boat-billed Flycatcher
- Boat-billed Heron
- Bohemian Waxwing
- Bolivian Tyrannulet
- Bolle's Pigeon
- Brahminy Kite
- Bran-colored Flycatcher
- Brazilian Ruby
- Brazilian Tanager
- Brazilian Teal
- Brehm's Tiger Parrot
- Bright-rumped Attila
- Broad-billed Motmot
- Broad-billed Roller
- Brolga
- Bronze-green Euphonia
- Bronze-tailed Plumeleteer
- Bronze-winged Jacana
- Bronze-winged Parrot
- Bronze Ground Dove
- Bronze Mannikin
- Bronzed Drongo
- Bronzy Inca
- Bronzy Sunbird
- Brown-backed Chat-Tyrant
- Brown-bellied Swallow
- Brown-billed Scythebill
- Brown-capped Pygmy Woodpecker
- Brown-capped Tyrannulet
- Brown-chested Martin
- Brown-crested Flycatcher
- Brown-headed Barbet
- Brown-hooded Kingfisher
- Brown-throated Parakeet
- Brown-throated Sunbird
- Brown-throated Wattle-eye
- Brown Babbler
- Brown Falcon
- Brown Inca
- Brown Jacamar
- Brown Noddy
- Brown Pelican
- Brown Quail
- Brown Sicklebill
- Brown Snake Eagle
- Brown Thornbill
- Brown Tinamou
- Brown Treecreeper
- Brown Violetear
- Brubru
- Buff-banded Rail
- Buff-breasted Mountain Tanager
- Buff-breasted Wren
- Buff-crested Bustard
- Buff-fronted Foliage-gleaner
- Buff-fronted Quail-Dove
- Buff-necked Ibis
- Buff-tailed Coronet
- Buff-throated Saltator
- Buff-throated Woodcreeper
- Buff-winged Starfrontlet
- Burmese Shrike
- Burnished-buff Tanager
- Burrowing Owl
- Bush Stone-curlew