- Baglafecht Weaver
- Bananaquit
- Band-tailed Antbird
- Band-tailed Pigeon
- Bare-faced Curassow
- Bare-faced Go-away-bird
- Bare-faced Ibis
- Bare-throated Tiger Heron
- Barn Swallow
- Barnacle Goose
- Barred Antshrike
- Bateleur
- Bay-headed Tanager
- Bearded Barbet
- Beautiful Sunbird
- Beryl-spangled Tanager
- Black-and-white-casqued Hornbill
- Black-and-white Becard
- Black-and-white Mannikin
- Black-and-white Owl
- Black-and-white Shrike-flycatcher
- Black-and-white Warbler
- Black-and-yellow Phainoptila
- Black-backed Water Tyrant
- Black-banded Owl
- Black-bellied Antwren
- Black-bellied Bustard
- Black-bellied Whistling Duck
- Black-billed Nightingale-Thrush
- Black-billed Peppershrike
- Black-billed Weaver
- Black-billed Wood Dove
- Black-capped Donacobius
- Black-capped Tanager
- Black-cheeked Woodpecker
- Black-chinned Mountain Tanager
- Black-collared Hawk
- Black-cowled Oriole
- Black-crested Coquette
- Black-crowned Antshrike
- Black-crowned Night Heron
- Black-crowned Tchagra
- Black-crowned Waxbill
- Black-eared Hemispingus
- Black-faced Grosbeak
- Black-fronted Nunbird
- Black-headed Gonolek
- Black-headed Gull
- Black-headed Heron
- Black-headed Lapwing
- Black-headed Weaver
- Black-necked Stilt
- Black-necked Weaver
- Black-rumped Waxbill
- Black-tailed Godwit
- Black-throated Apalis
- Black-throated Saltator
- Black-winged Kite
- Black-winged Saltator
- Black-winged Stilt
- Black Bee-eater
- Black Bishop
- Black Crake
- Black Crowned Crane
- Black Guan
- Black Heron
- Black Kite
- Black Phoebe
- Black Redstart
- Black Scrub Robin
- Black Skimmer
- Black Stork
- Black Tern
- Black Vulture
- Blackburnian Warbler
- Blackcap Babbler
- Blue-and-black Tanager
- Blue-and-white Swallow
- Blue-and-yellow Tanager
- Blue-bellied Roller
- Blue-black Grassquit
- Blue-breasted Kingfisher
- Blue-capped Tanager
- Blue-cheeked Bee-eater
- Blue-chested Hummingbird
- Blue-crowned Parakeet
- Blue-crowned Trogon
- Blue-grey Tanager
- Blue-headed Coucal
- Blue-lored Antbird
- Blue-naped Mousebird
- Blue-necked Tanager
- Blue-spotted Wood Dove
- Blue-throated Brown Sunbird
- Blue-tufted Starthroat
- Blue-winged Mountain Tanager
- Blue Dacnis
- Blue Ground Dove
- Bluethroat
- Bluish-grey Saltator
- Bluish Flowerpiercer
- Boat-billed Flycatcher
- Boat-billed Heron
- Booted Eagle
- Brimstone Canary
- Broad-billed Motmot
- Broad-billed Roller
- Broad-winged Hawk
- Bronze-winged Courser
- Bronze-winged Parrot
- Bronzy Inca
- Bronzy Sunbird
- Brown-capped Vireo
- Brown-capped Weaver
- Brown-chested Martin
- Brown-crested Flycatcher
- Brown-crowned Tchagra
- Brown-throated Wattle-eye
- Brown Babbler
- Brown Violetear
- Bruce's Green Pigeon
- Buff-bellied Warbler
- Buff-fronted Foliage-gleaner
- Buff-necked Ibis
- Buff-rumped Warbler
- Buff-spotted Woodpecker
- Buff-tailed Coronet
- Buff-throated Saltator
- Buff-throated Woodcreeper
- Burrowing Owl