- Baikal Teal
- Band-rumped Storm Petrel
- Bar-tailed Lark
- Barred Warbler
- Bearded Reedling
- Bearded Vulture
- Black-crowned Tchagra
- Black-eared Wheatear
- Black-headed Gull
- Black-legged Kittiwake
- Black-throated Thrush
- Black-winged Stilt
- Black Guillemot
- Black Kite
- Black Lark
- Black Redstart
- Black Wheatear
- Blue Rock Thrush
- Bluethroat
- Blyth's Reed Warbler
- Bolle's Pigeon
- Bonelli's Eagle
- Booted Eagle
- Booted Warbler
- Boreal Owl
- Brambling
- Broad-billed Sandpiper
- Buff-breasted Sandpiper