- Baglafecht Weaver
- Baikal Teal
- Baird's Sandpiper
- Baltimore Oriole
- Bananaquit
- Band-backed Wren
- Band-tailed Guan
- Band-tailed Hornero
- Banded Bay Cuckoo
- Banded Martin
- Banded Wren
- Bar-backed Partridge
- Bar-headed Goose
- Bar-winged Flycatcher-shrike
- Barbary Partridge
- Bare-cheeked Babbler
- Bare-eyed Thrush
- Bare-faced Curassow
- Bare-faced Go-away-bird
- Bare-faced Ibis
- Bare-throated Bellbird
- Bare-throated Tiger Heron
- Barn Swallow
- Barnacle Goose
- Barred Antshrike
- Barred Buttonquail
- Barred Forest Falcon
- Barred Fruiteater
- Bateleur
- Bay-chested Warbling Finch
- Bay-headed Tanager
- Bay Wren
- Baya Weaver
- Bearded Barbet
- Bearded Reedling
- Bearded Vulture
- Beautiful Sunbird
- Belted Kingfisher
- Berthelot's Pipit
- Bicolored Wren
- Black-and-gold Cotinga
- Black-and-white-casqued Hornbill
- Black-and-white Mannikin
- Black-and-white Shrike-flycatcher
- Black-and-white Warbler
- Black-backed Dwarf Kingfisher
- Black-backed Puffback
- Black-backed Water Tyrant
- Black-banded Owl
- Black-bellied Bustard
- Black-bellied Hummingbird
- Black-bellied Sandgrouse
- Black-bellied Starling
- Black-bellied Sunbird
- Black-bellied Whistling Duck
- Black-billed Barbet
- Black-billed Nightingale-Thrush
- Black-billed Peppershrike
- Black-billed Thrush
- Black-billed Wood Dove
- Black-browed Reed Warbler
- Black-capped Bulbul
- Black-capped Donacobius
- Black-capped Hemispingus
- Black-capped Kingfisher
- Black-capped Social Weaver
- Black-capped Tanager
- Black-cheeked Woodpecker
- Black-chested Jay
- Black-chested Prinia
- Black-chested Snake Eagle
- Black-chinned Hummingbird
- Black-chinned Mountain Tanager
- Black-collared Barbet
- Black-collared Hawk
- Black-collared Starling
- Black-cowled Oriole
- Black-crested Bulbul
- Black-crested Warbler
- Black-crowned Night Heron
- Black-crowned Tchagra
- Black-crowned Waxbill
- Black-eared Barbet
- Black-faced Dacnis
- Black-faced Sandgrouse
- Black-faced Waxbill
- Black-fronted Nunbird
- Black-goggled Tanager
- Black-headed Apalis
- Black-headed Bulbul
- Black-headed Cuckooshrike
- Black-headed Gonolek
- Black-headed Gull
- Black-headed Heron
- Black-headed Ibis
- Black-headed Lapwing
- Black-headed Oriole
- Black-headed Saltator
- Black-headed Tanager
- Black-headed Trogon
- Black-headed Weaver
- Black-hooded Antshrike
- Black-hooded Oriole
- Black-lored Babbler
- Black-naped Monarch
- Black-naped Oriole
- Black-necked Grebe
- Black-necked Stilt
- Black-necked Stork
- Black-necked Weaver
- Black-striped Sparrow
- Black-tailed Gnatcatcher
- Black-tailed Godwit
- Black-tailed Tityra
- Black-tailed Trainbearer
- Black-throated Barbet
- Black-throated Brilliant
- Black-throated Canary
- Black-throated Grosbeak
- Black-throated Mango
- Black-throated Saltator
- Black-throated Sparrow
- Black-throated Wattle-eye
- Black-winged Cuckooshrike
- Black-winged Kite
- Black-winged Lapwing
- Black-winged Pratincole
- Black-winged Saltator
- Black-winged Stilt
- Black Coucal
- Black Crake
- Black Crowned Crane
- Black Drongo
- Black Eagle
- Black Flowerpiercer
- Black Heron
- Black Jacobin
- Black Kite
- Black Kite (govinda)
- Black Phoebe
- Black Redstart
- Black Saw-wing
- Black Skimmer
- Black Swan
- Black Vulture
- Black Woodpecker
- Blackburnian Warbler
- Blackish Pewee
- Blackish Rail
- Blacksmith Lapwing
- Blond-crested Woodpecker
- Blue-and-white Swallow
- Blue-and-yellow Macaw
- Blue-backed Conebill
- Blue-billed Black Tyrant
- Blue-billed Teal
- Blue-black Grassquit
- Blue-breasted Bee-eater
- Blue-capped Cordon-bleu
- Blue-capped Tanager
- Blue-cheeked Bee-eater
- Blue-chested Hummingbird
- Blue-crowned Trogon
- Blue-grey Tanager
- Blue-headed Coucal
- Blue-mantled Crested Flycatcher
- Blue-naped Chlorophonia
- Blue-naped Mousebird
- Blue-necked Tanager
- Blue-tailed Bee-eater
- Blue-tailed Emerald
- Blue-throated Brown Sunbird
- Blue-throated Toucanet
- Blue-winged Leafbird
- Blue-winged Mountain Tanager
- Blue-winged Teal
- Blue Crane
- Blue Dacnis
- Blue Ground Dove
- Blue Manakin
- Blue Rock Thrush
- Blue Waxbill
- Blue Whistling Thrush
- Bluish-grey Saltator
- Blyth's Leaf Warbler
- Blyth's Paradise Flycatcher
- Boat-billed Flycatcher
- Boat-billed Heron
- Bokmakierie
- Bradfield's Hornbill
- Brahminy Kite
- Brahminy Starling
- Bran-colored Flycatcher
- Brant Goose
- Brassy-breasted Tanager
- Brazilian Ruby
- Brazilian Tanager
- Brazilian Teal
- Brewer's Blackbird
- Bridled Tern
- Brimstone Canary
- Broad-billed Roller
- Broad-billed Sandpiper
- Broad-winged Hawk
- Bronze-winged Jacana
- Bronze-winged Parrot
- Bronze Mannikin
- Bronzy Inca
- Brown-backed Chat-Tyrant
- Brown-backed Honeybird
- Brown-backed Woodpecker
- Brown-banded Antpitta
- Brown-breasted Flycatcher
- Brown-capped Babbler
- Brown-chested Lapwing
- Brown-chested Martin
- Brown-crested Flycatcher
- Brown-crowned Tchagra
- Brown-headed Barbet
- Brown-headed Cowbird
- Brown-headed Gull
- Brown-hooded Kingfisher
- Brown-hooded Parrot
- Brown-necked Raven
- Brown-throated Martin
- Brown-throated Sunbird
- Brown-throated Wattle-eye
- Brown Babbler
- Brown Booby
- Brown Firefinch
- Brown Fish Owl
- Brown Inca
- Brown Noddy
- Brown Pelican
- Brown Shrike
- Brown Snake Eagle
- Brown Tinamou
- Brown Violetear
- Brown Wood Owl
- Brubru
- Buff-breasted Mountain Tanager
- Buff-crested Bustard
- Buff-fronted Foliage-gleaner
- Buff-necked Ibis
- Buff-streaked Chat
- Buff-tailed Coronet
- Buff-throated Purpletuft
- Buff-throated Saltator
- Buff-throated Warbling Finch
- Buff-winged Starfrontlet
- Buffy Helmetcrest
- Bullock's Oriole
- Burchell's Coucal
- Burchell's Courser
- Burchell's Sandgrouse
- Burchell's Starling
- Burnished-buff Tanager
- Burrowing Owl