- Bar-tailed Godwit
- Barn Swallow
- Barnacle Goose
- Barrow's Goldeneye
- Black-crowned Night Heron
- Black-fronted Dotterel
- Black-headed Gull
- Black-legged Kittiwake
- Black-necked Grebe
- Black-tailed Godwit
- Black-winged Kite
- Black-winged Stilt
- Black Currawong
- Black Guillemot
- Black Kite
- Black Redstart
- Black Stork
- Black Swan
- Black Tern
- Blue-faced Honeyeater
- Bluethroat
- Bohemian Waxwing
- Bonelli's Eagle
- Booted Eagle
- Brambling
- Brant Goose
- Buff-banded Rail
- Buff-breasted Sandpiper