- Bar-crested Antshrike
- Bar-headed Goose
- Bar-necked Cuckoo-Dove
- Bar-necked Cuckoo Dove
- Bar-pouched Wreathed Hornbill
- Bar-shouldered Dove
- Bar-tailed Cuckoo-Dove
- Bar-tailed Desert Lark
- Bar-tailed Godwit
- Bar-tailed Lark
- Bar-tailed Snowfinch
- Bar-tailed Treecreeper
- Bar-tailed Trogon
- Bar-throated Apalis
- Bar-throated Minla
- Bar-throated Siva
- Bar-throated Wreathed Hornbill
- Bar-vented Wren
- Bar-winged Cinclodes
- Bar-winged Flycatcher-Shrike
- Bar-winged Flycatcher-shrike
- Bar-winged Oriole
- Bar-winged Prinia
- Bar-winged Rail
- Bar-winged Weaver
- Bar-winged Wood-Wren
- Bar-winged Wood Wren
- Bar-winged Wren-Babbler
- Bar-winged Wren Babbler
- Baraba Gull
- Baratt's Scrub-Warbler
- Barau's Petrel
- Barbados
- Barbados Bullfinch
- Barbary Dove
- Barbary Falcon
- Barbary Partridge
- Barbary Shrike
- Barbuda
- Barbuda Warbler
- Barcelona and the Llobregat Delta
- Barcelona and the Llobregat Delta Spain
- Barda Wildlife Sanctuary
- Bardsey Island (Ynys Enlii)
- Bare-cheeked Babbler
- Bare-cheeked Trogon
- Bare-crowned Antbird
- Bare-eyed Antbird
- Bare-eyed Babbler
- Bare-eyed Crow
- Bare-eyed Ground-Dove
- Bare-eyed Ground Dove
- Bare-eyed Myna
- Bare-eyed Pigeon
- Bare-eyed Rail
- Bare-eyed Robin
- Bare-eyed Thrush
- Bare-eyed White-eye
- Bare-faced Bulbul
- Bare-faced Crow
- Bare-faced Curassow
- Bare-faced Go-away-bird
- Bare-faced Go-away Bird
- Bare-faced Go Away Bird
- Bare-faced Ground-Dove
- Bare-faced Ground Dove
- Bare-faced Ibis
- Bare-faced Rail
- Bare-headed Laughing-thrush
- Bare-headed Laughingthrush
- Bare-headed Little King Bird-of-paradise
- Bare-legged Owl
- Bare-legged Screech-owl
- Bare-legged Swiftlet
- Bare-necked Fruitcrow
- Bare-necked Umbrellabird
- Bare-shanked Screech-Owl
- Bare-shanked Screech Owl
- Bare-shanked screech-owl
- Bare-shanked screech owl
- Bare-throated Bellbird
- Bare-throated Tiger-Heron
- Bare-throated Tiger Heron
- Bare-throated Whistler
- Bare legged screech owl
- Bareges(Pyrenees)
- Bareges (Pyrenees)
- Barfold Copse
- Barfold Copse RSPB Reserve
- Barka Indigobird
- Barking Boobook
- Barking Imperial Pigeon
- Barking Owl
- Barlow's Lark
- Barn Owl
- Barn Swallow
- Barnacle Goose
- Barnardius
- Barnardius Zonarius semitorquatus
- Barnardius barnardi
- Barnardius zonarius
- Barnardius zonarius barnardi
- Barnardius zonarius semitorquatus
- Barolo Shearwater
- Baron's Haugh
- Baron's Haugh RSPB Reserve
- Baron's Hermit
- Baron's Spinetail
- Barr Lake
- Barranca Brush-Finch
- Barranca Brush Finch
- Barranca Finch
- Barratt's Scrub Warbler
- Barratt's Warbler
- Barred-wing Wren-Babbler
- Barred-wing Wren Babbler
- Barred Antshrike
- Barred Antthrush
- Barred Becard
- Barred Boobook
- Barred Buttonquail
- Barred Cuckoo-Dove
- Barred Cuckoo-shrike
- Barred Cuckoo Dove
- Barred Cuckooshrike
- Barred Dove
- Barred Eagle-Owl
- Barred Eagle Owl
- Barred Forest-Falcon
- Barred Forest Falcon
- Barred Fruiteater
- Barred Ground-Dove
- Barred Hawk
- Barred Honey-Buzzard
- Barred Honey Buzzard
- Barred Honeyeater
- Barred Laughing-thrush
- Barred Laughingthrush
- Barred Long-tailed Cuckoo
- Barred Owl
- Barred Owlet-Nightjar
- Barred Owlet-nightjar
- Barred Owlet Nightjar
- Barred Parakeet
- Barred Puffbird
- Barred Quail
- Barred Rail
- Barred Tinamou
- Barred Warbler
- Barred Woodcreeper
- Barred Wren-Warbler
- Barred Wren Warbler
- Barrington Tops
- Barrow's Bustard
- Barrow's Goldeneye
- Barrow's Korhaan
- Bartels' Wood-Owl
- Bartels' Wood Owl
- Bartels's Wood-Owl
- Bartels's Wood Owl
- Bartels's wood-owl
- Bartels Wood-Owl
- Bartels Wood Owl
- Bartlett's Tinamou
- Bartramia
- Bartramia longicauda
- Barusan Cuckoo-Dove
- Barusan Cuckoo Dove
- Baryphthengus
- Baryphthengus martii
- Baryphthengus martii semirufous
- Baryphthengus ruficapillus
- Basilan Tarictic Hornbill
- Basileuterus
- Basileuterus basilicus
- Basileuterus belli
- Basileuterus bivittatus
- Basileuterus chlorophrys
- Basileuterus chrysogaster
- Basileuterus cinereicollis
- Basileuterus conspicillatus
- Basileuterus coronatus
- Basileuterus culicivorus
- Basileuterus culicivorus hypoleucus
- Basileuterus culicivorus olivascens
- Basileuterus delattrii
- Basileuterus flaveolus
- Basileuterus fraseri
- Basileuterus fulvicauda
- Basileuterus griseiceps
- Basileuterus hypoleucus
- Basileuterus ignotus
- Basileuterus lachrymosa
- Basileuterus lachrymosus
- Basileuterus leucoblepharus
- Basileuterus leucophrys
- Basileuterus luteoviridis
- Basileuterus melanogenys
- Basileuterus melanotis
- Basileuterus nigrocristatus
- Basileuterus punctipectus
- Basileuterus rivularis
- Basileuterus rufifrons
- Basileuterus signatus
- Basileuterus tacarcunae
- Basileuterus trifasciatus
- Basileuterus tristriatus
- Basilinna
- Basilinna leucotis
- Basilinna xantusii
- Basilornis
- Basilornis celebensis
- Basilornis corythaix
- Basilornis galeatus
- Basilornis miranda
- Basra Reed-Warbler
- Basra Reed Warbler
- Bass Rock
- Bassenthwaite Lake
- Bassian Thrush
- Bat-like Spinetail
- Bat Falcon
- Bat Hawk
- Batara
- Batara cinerea
- Bateleur
- Bateleur Eagle
- Bates' Nightjar
- Bates' gray-throated rail
- Bates' grey-throated rail
- Bates's Nightjar
- Bates's Paradise-Flycatcher
- Bates's Paradise Flycatcher
- Bates's Sunbird
- Bates's Swift
- Bates's Weaver
- Bates's gray-throated rail
- Bates's grey-throated rail
- Bathmocercus
- Bathmocercus cerviniventris
- Bathmocercus rufus
- Bathmocercus winifredae
- Batis
- Batis capensis
- Batis crypta
- Batis dimorpha
- Batis diops
- Batis erlangeri
- Batis fratrum
- Batis ituriensis
- Batis margaritae
- Batis minima
- Batis minor
- Batis minor erlangeri
- Batis minulla
- Batis mixta
- Batis molitor
- Batis occulta
- Batis orientalis
- Batis perkeo
- Batis poensis
- Batis pririt
- Batis reichenowi
- Batis senegalensis
- Batis soror
- Batrachostomus
- Batrachostomus affinis
- Batrachostomus auritus
- Batrachostomus chaseni
- Batrachostomus cornutus
- Batrachostomus harterti
- Batrachostomus hodgsoni
- Batrachostomus javensis
- Batrachostomus mixtus
- Batrachostomus moniliger
- Batrachostomus poliolophus
- Batrachostomus septimus
- Batrachostomus stellatus
- Baudin's Black-Cockatoo
- Baudin's Black Cockatoo
- Baudin's Cockatoo
- Baudo Guan
- Baudo Oropendola
- Baumann's Greenbul
- Baumann's Olive Greenbul
- Bavelaw Marsh
- Bay-backed Shrike
- Bay-breasted Cuckoo
- Bay-breasted Warbler
- Bay-capped Wren-Spinetail
- Bay-capped Wren Spinetail
- Bay-chested Warbling-Finch
- Bay-chested Warbling Finch
- Bay-crowned Brush-Finch
- Bay-crowned Brush Finch
- Bay-crowned Brushfinch
- Bay-crowned brush-finch
- Bay-headed Tanager
- Bay-ringed Tyrannulet
- Bay-vented Cotinga
- Bay-winged Cowbird
- Bay-winged Hawk
- Bay Antpitta
- Bay Coucal
- Bay Hornero
- Bay Owl
- Bay Woodpecker
- Bay Wren
- Bay of Quinte
- Bay of Quinte(Belleville. Bay of Quinte)
- Baya Weaver
- Bayerischer Wald
- Bayerischer Wald Germany
- Baywing
- Baza
- Bazas
- Beach Kingfisher
- Beach Stone-curlew
- Beach Stone Curlew
- Beach Thick-knee
- Beachy Head
- Bean Goose
- Bear Island
- Bearded Barbet
- Bearded Bellbird
- Bearded Bulbul
- Bearded Guan
- Bearded Helmetcrest
- Bearded Manakin
- Bearded Melidectes
- Bearded Mountaineer
- Bearded Parrotbill
- Bearded Penguin
- Bearded Reedling
- Bearded Screech-Owl
- Bearded Screech Owl
- Bearded Scrub-Robin
- Bearded Scrub Robin
- Bearded Tachuri
- Bearded Tit
- Bearded Tit-Babbler
- Bearded Tit Babbler
- Bearded Vulture
- Bearded Wood-Partridge
- Bearded Wood Partridge


