- Baglafecht Weaver
- Baikal Teal
- Baltimore Oriole
- Bananaquit
- Band-rumped Swift
- Banded Honeyeater
- Banded Kestrel
- Banded Lapwing
- Bar-shouldered Dove
- Bar-tailed Godwit
- Bare-faced Go-away-bird
- Bare-faced Ground Dove
- Barn Swallow
- Barnacle Goose
- Barred Antshrike
- Barred Cuckooshrike
- Barrow's Goldeneye
- Bassian Thrush
- Bat Falcon
- Bateleur
- Baudin's Black Cockatoo
- Bay-headed Tanager
- Beach Stone-curlew
- Bearded Bellbird
- Bearded Tachuri
- Belcher's Gull
- Bell Miner
- Berthelot's Pipit
- Bicolored Conebill
- Black-bellied Cuckoo
- Black-bellied Whistling Duck
- Black-billed Gull
- Black-billed Magpie
- Black-billed Turaco
- Black-breasted Buzzard
- Black-capped Chickadee
- Black-capped Donacobius
- Black-chested Snake Eagle
- Black-chinned Hummingbird
- Black-collared Hawk
- Black-crested Antshrike
- Black-crowned Night Heron
- Black-crowned Tityra
- Black-eared Catbird
- Black-faced Cormorant
- Black-faced Cuckooshrike
- Black-faced Hawk
- Black-faced Monarch
- Black-faced Sandgrouse
- Black-faced Tanager
- Black-faced Woodswallow
- Black-fronted Dotterel
- Black-fronted Nunbird
- Black-headed Antbird
- Black-headed Grosbeak
- Black-headed Heron
- Black-headed Parrot
- Black-hooded Oriole
- Black-lored Babbler
- Black-necked Aracari
- Black-necked Grebe
- Black-necked Stilt
- Black-necked Stork
- Black-shouldered Kite
- Black-spotted Barbet
- Black-tailed Godwit
- Black-tailed Nativehen
- Black-tailed Tityra
- Black-tailed Treecreeper
- Black-throated Antbird
- Black-throated Finch
- Black-throated Grey Warbler
- Black-throated Mango
- Black-throated Trogon
- Black-throated Whipbird
- Black-winged Lapwing
- Black-winged Stilt
- Black Butcherbird
- Black Caracara
- Black Crake
- Black Crowned Crane
- Black Curassow
- Black Currawong
- Black Drongo
- Black Hawk-Eagle
- Black Heron
- Black Kite
- Black Phoebe
- Black Skimmer
- Black Stilt
- Black Swan
- Black Tern
- Black Vulture
- Blackish Nightjar
- Blacksmith Lapwing
- Blue-and-white Swallow
- Blue-and-yellow Macaw
- Blue-backed Manakin
- Blue-bearded Bee-eater
- Blue-billed Duck
- Blue-black Grassquit
- Blue-black Grosbeak
- Blue-chinned Sapphire
- Blue-crowned Trogon
- Blue-faced Honeyeater
- Blue-grey Gnatcatcher
- Blue-grey Tanager
- Blue-headed Parrot
- Blue-tailed Bee-eater
- Blue-tailed Emerald
- Blue-winged Kookaburra
- Blue Dacnis
- Blue Vanga
- Boat-billed Flycatcher
- Boat-billed Heron
- Bonaparte's Gull
- Boreal Chickadee
- Bourke's Parrot
- Brahminy Kite
- Brazilian Tanager
- Brewer's Blackbird
- Bridled Honeyeater
- Bridled Tern
- Bright-rumped Attila
- Bright-rumped Yellow Finch
- Broad-billed Flycatcher
- Broad-billed Sandpiper
- Brolga
- Bronzed Drongo
- Brown-backed Honeyeater
- Brown-bellied Antwren
- Brown-chested Martin
- Brown-crested Flycatcher
- Brown-headed Cowbird
- Brown-throated Parakeet
- Brown Booby
- Brown Cuckoo-Dove
- Brown Falcon
- Brown Gerygone
- Brown Honeyeater
- Brown Noddy
- Brown Pelican
- Brown Quail (australis)
- Brown Thornbill
- Brown Treecreeper
- Brush Cuckoo
- Budgerigar
- Buff-banded Rail
- Buff-breasted Paradise Kingfisher
- Buff-sided Robin
- Buff-throated Saltator
- Buff-winged Cinclodes
- Bullock's Oriole
- Burnished-buff Tanager
- Bush Stone-curlew