- Balearic Shearwater
- Bar-tailed Godwit
- Bare-faced Ground Dove
- Bearded Vulture
- Black-crowned Night Heron
- Black-headed Gull
- Black-legged Kittiwake
- Black-tailed Godwit
- Black-winged Ground Dove
- Black-winged Stilt
- Black Eagle
- Black Grouse
- Black Guillemot
- Black Phoebe
- Black Redstart
- Black Stork
- Black Tern
- Blue-and-white Swallow
- Blue-capped Tanager
- Bluethroat
- Bohemian Waxwing
- Bonelli's Eagle
- Booted Eagle
- Boreal Owl
- Brambling
- Buff-breasted Earthcreeper