- Baltimore Oriole
- Bananaquit
- Bar-throated Apalis
- Bare-faced Curassow
- Bare-faced Go-away-bird
- Bare-faced Ibis
- Bare-throated Tiger Heron
- Barnacle Goose
- Barred Antshrike
- Bat Falcon
- Bay-breasted Warbler
- Bay-headed Tanager
- Belford's Melidectes
- Bicolored Antbird
- Black-and-white Owl
- Black-and-white Seedeater
- Black-and-white Warbler
- Black-backed Puffback
- Black-bellied Whistling Duck
- Black-bellied Wren
- Black-billed Thrush
- Black-billed Wood Hoopoe
- Black-capped Donacobius
- Black-capped Tanager
- Black-chested Buzzard-Eagle
- Black-chested Jay
- Black-collared Barbet
- Black-collared Hawk
- Black-crowned Night Heron
- Black-faced Solitaire
- Black-fronted Nunbird
- Black-fronted Piping Guan
- Black-goggled Tanager
- Black-headed Gonolek
- Black-headed Heron
- Black-headed Ibis
- Black-headed Oriole
- Black-headed Saltator
- Black-headed Tanager
- Black-headed Trogon
- Black-headed Weaver
- Black-hooded Sierra Finch
- Black-legged Kittiwake
- Black-necked Aracari
- Black-necked Stilt
- Black-necked Stork
- Black-tailed Godwit
- Black-tailed Trainbearer
- Black-tailed Trogon
- Black-throated Green Warbler
- Black-throated Grosbeak
- Black-throated Mango
- Black-vented Oriole
- Black-winged Kite
- Black-winged Lovebird
- Black-winged Saltator
- Black-winged Stilt
- Black Flowerpiercer
- Black Kite
- Black Noddy
- Black Phoebe
- Black Skimmer
- Black Sparrowhawk
- Black Swan
- Black Tern
- Black Vulture
- Blackburnian Warbler
- Blacksmith Lapwing
- Blue-and-white Swallow
- Blue-and-yellow Macaw
- Blue-black Grassquit
- Blue-cheeked Bee-eater
- Blue-chested Hummingbird
- Blue-crowned Parakeet
- Blue-footed Booby
- Blue-grey Gnatcatcher
- Blue-grey Tanager
- Blue-naped Chlorophonia
- Blue-necked Tanager
- Blue-tailed Bee-eater
- Blue-winged Mountain Tanager
- Blue Dacnis
- Blue Manakin
- Blue Waxbill
- Bluish-grey Saltator
- Boat-billed Heron
- Böhm's Bee-eater
- Booted Warbler
- Brahminy Starling
- Brazilian Teal
- Brehm's Tiger Parrot
- Brewer's Sparrow
- Broad-billed Hummingbird
- Broad-billed Motmot
- Broad-winged Hawk
- Bronze-tailed Plumeleteer
- Bronze-tailed Thornbill
- Bronze-winged Jacana
- Bronze Mannikin
- Brown-backed Chat-Tyrant
- Brown-crowned Tchagra
- Brown-hooded Kingfisher
- Brown Honeyeater
- Brown Inca
- Brown Jay
- Brown Pelican
- Brown Sicklebill
- Brown Snake Eagle
- Brown Violetear
- Buff-fronted Foliage-gleaner
- Buff-necked Ibis
- Buff-tailed Coronet
- Buff-throated Saltator
- Buff-throated Woodcreeper
- Burchell's Sandgrouse
- Burrowing Owl
- Bushy-crested Jay