- Band-winged Nightjar
- Banded Ground Cuckoo
- Banded Wren
- Bar-breasted Piculet
- Bare-faced Curassow
- Bare-faced Go-away-bird
- Bare-legged Owl
- Bare-throated Tiger Heron
- Barking Imperial Pigeon
- Barred Buttonquail
- Barred Cuckooshrike
- Barred Rail
- Bearded Screech Owl
- Beautiful Fruit Dove
- Beautiful Woodpecker
- Bicolored Hawk
- Black-and-rufous Warbling Finch
- Black-and-white Tanager
- Black-and-yellow Tanager
- Black-backed Bush Tanager
- Black-backed Oriole
- Black-breasted Thrush
- Black-chested Fruiteater
- Black-chinned Robin
- Black-faced Tanager
- Black-headed Woodpecker
- Black-throated Barbet
- Black-throated Shrike-Tanager
- Black Curassow
- Black Eagle
- Black Imperial Pigeon
- Blanford's Rosefinch
- Blue-and-gold Tanager
- Blue-billed Curassow
- Blue-cheeked Amazon
- Blue-fronted Fig Parrot
- Blue-fronted Parrotlet
- Blue Dacnis
- Blue Lorikeet
- Bolivian Brushfinch
- Brown-chested Alethe
- Brown-crowned Tchagra
- Brown Tinamou
- Bulwer's Pheasant
- Burmese Myna