- Bombay Hook National Wildlife Refuge
- Bombay Hook National Wildlife Refuge(Northeast United States - On the east coast of cen)
- Bombycilla
- Bombycilla cedrorum
- Bombycilla garrulus
- Bombycilla japonica
- Bombycillidae
- Bonaire
- Bonaparte's Blackbird
- Bonaparte's Gull
- Bonaparte's Nightjar
- Bonaparte's Parakeet
- Bonaparte’s Gull
- Bonasa
- Bonasa bonasia
- Bonasa sewerzowi
- Bonasa umbellus
- Bonaventure Island and Percé Rock
- Bonaventure Island and Percé Rock
- Bonelli's Eagle
- Bonelli's Warbler
- Bonifacio
- Bonifacio Corsica
- Bonifacio Corsica, France
- Bonin Grosbeak
- Bonin Honeyeater
- Bonin Island Honeyeater
- Bonin Islands White-eye
- Bonin Petrel
- Bonin Pigeon
- Bonin Thrush
- Bonin White-eye
- Bonin Wood-Pigeon
- Bonin Wood Pigeon
- Bonvalot's Tit
- Bonxie
- Boobies
- Booby
- Booted Eagle
- Booted Racket-tail
- Booted Racket Tail
- Booted Warbler
- Boquer Valley (Vall de Bocquer)
- Boquer Valley (Vall de Bocquer) (Mallorca, Balearic Islands)
- Boquilobo Marsh
- Boquilobo Marsh Portugal
- Boran Cisticola
- Borcka
- Boreal Chickadee
- Boreal Owl
- Borgefjell National Park
- Borgefjell National Park Norway
- Borka
- Borka Turkey
- Bornean Banded-Pitta
- Bornean Banded Pitta
- Bornean Barbet
- Bornean Blue-Flycatcher
- Bornean Blue Flycatcher
- Bornean Bristlehead
- Bornean Bulbul
- Bornean Forktail
- Bornean Frogmouth
- Bornean Green-Magpie
- Bornean Green Magpie
- Bornean Ground-Babbler
- Bornean Ground-Cuckoo
- Bornean Ground Babbler
- Bornean Ground Cuckoo
- Bornean Leafbird
- Bornean Mountain Whistler
- Bornean Peacock-Pheasant
- Bornean Peacock Pheasant
- Bornean Spiderhunter
- Bornean Starling
- Bornean Stubtail
- Bornean Swiftlet
- Bornean Treepie
- Bornean Whistler
- Bornean Whistling-Thrush
- Bornean Whistling Thrush
- Bornean Wren-Babbler
- Bornean Wren Babbler
- Bornean hill-partridge
- Borneo
- Borçka
- Bosnia and Herzegovina
- Bosphorus
- Bospolder - Ekers Moeras(Antwerp)
- Bosque Del Apache National Wildlife Refuge
- Bosque de Tlalpan
- Bosque del Apache NWR
- Bosque del Apache National Wildlife Refuge
- Bostrychia
- Bostrychia bocagei
- Bostrychia carunculata
- Bostrychia hagedash
- Bostrychia hagedash hagedash
- Bostrychia olivacea
- Bostrychia rara
- Botaurus
- Botaurus Stellaris
- Botaurus lentiginosus
- Botaurus pinnatus
- Botaurus poiciloptilus
- Botaurus stellaris
- Botha's Lark
- Bothal
- Botswana
- Botta's Wheatear
- Botteri's Sparrow
- Boucard's Wren
- Bougainville Bush-Warbler
- Bougainville Bush Warbler
- Bougainville Crow
- Bougainville Dwarf-Kingfisher
- Bougainville Dwarf Kingfisher
- Bougainville Honeyeater
- Bougainville Hooded Whistler
- Bougainville Monarch
- Bougainville Moustached Kingfisher
- Bougainville Thicketbird
- Bougainville Thrush
- Bougainville Whistler
- Bough Beech Reservoir
- Bough Beech Reservoir Kent
- Boulder Chat
- Boulders Beach
- Boulton's Batis
- Boundary bay dike
- Bounty Island Shag
- Bounty Islands Shag
- Bounty Shag
- Bourbon Crested Starling
- Bourke's Parrot
- Bower's Shrike-thrush
- Bower's Shrike Thrush
- Bower's Shrikethrush
- Bower Thrush
- Bowerbirds
- Bowling Green Marsh
- Bowra Sanctuary
- Boyce Thompson Arboretum
- Boyce Thompson Arboretum(Superior, Arizona)
- Boyd's Shearwater
- Boyer's Cuckoo-shrike
- Boyer's Cuckooshrike
- Brace's Emerald
- Brachycope
- Brachycope anomala
- Brachygalba
- Brachygalba albogularis
- Brachygalba goeringi
- Brachygalba lugubris
- Brachygalba lugubris melanosterna
- Brachygalba salmoni
- Brachypodius atriceps
- Brachypodius fuscoflavescens
- Brachypodius priocephalus
- Brachypteracias
- Brachypteracias leptosomus
- Brachypteracias squamiger
- Brachypteraciidae
- Brachypteryx
- Brachypteryx albiventris
- Brachypteryx cruralis
- Brachypteryx hyperythra
- Brachypteryx leucophris
- Brachypteryx leucophris nipalensis
- Brachypteryx leucophrys
- Brachypteryx major
- Brachypteryx montana
- Brachypteryx montana cruralis
- Brachypteryx stellata
- Brachyramphus
- Brachyramphus brevirostris
- Brachyramphus marmoratus
- Brachyramphus perdix
- Braddock Bay Bird Observatory
- Bradfield's Hornbill
- Bradfield's Lark
- Bradfield's Swift
- Bradornis
- Bradornis boehmi
- Bradornis comitatus
- Bradornis fuliginosus
- Bradornis infuscatus
- Bradornis infuscatus placidus
- Bradornis mariquensis
- Bradornis microrhynchus
- Bradornis pallidus
- Bradornis pumilus
- Bradornis ussheri
- Bradypterus
- Bradypterus accentor
- Bradypterus alfredi
- Bradypterus alishanensis
- Bradypterus baboecala
- Bradypterus bangwaensis
- Bradypterus barratti
- Bradypterus brunneus
- Bradypterus carpalis
- Bradypterus castaneus
- Bradypterus caudatus
- Bradypterus centralis
- Bradypterus cinnamomeus
- Bradypterus davidi
- Bradypterus grandis
- Bradypterus graueri
- Bradypterus kashmirensis
- Bradypterus lopesi
- Bradypterus lopezi
- Bradypterus luteoventris
- Bradypterus major
- Bradypterus mandelli
- Bradypterus mariae
- Bradypterus montis
- Bradypterus palliseri
- Bradypterus seebohmi
- Bradypterus sylvaticus
- Bradypterus tacsanowskius
- Bradypterus thoracicus
- Bradypterus timorensis
- Bradypterus timoriensis
- Bradypterus victorini
- Brahminy Kite
- Brahminy Mynah
- Brahminy Starling
- Brahminy duck
- Brain-fever Bird
- Brambling
- Bran-colored Flycatcher
- Bran-coloured Flycatcher
- Brandon Marsh
- Brandt's Cormorant
- Brandt's Jay
- Brandt's Mountain Finch
- Brandt's Rosefinch
- Brant
- Brant Goose
- Branta
- Branta Canadensis
- Branta bernicla
- Branta bernicla bernicla
- Branta bernicla hrota
- Branta canadensis
- Branta canadensis fulva
- Branta hrota
- Branta hutchinsii
- Branta hutchinsii hutchinsii
- Branta hutchinsii leucopareia
- Branta hutchinsii taverneri
- Branta leucopsis
- Branta nigricans
- Branta ruficollis
- Branta sandvicensis
- Brasil
- Brasilia Tapaculo
- Brass's Friarbird
- Brassy-breasted Tanager
- Braun's Bushshrike
- Braunwald
- Brazil
- Brazilian Antthrush
- Brazilian Black-Tyrant
- Brazilian Black Tyrant
- Brazilian Duck
- Brazilian Laniisoma
- Brazilian Merganser
- Brazilian Ruby
- Brazilian Tanager
- Brazilian Teal
- Brazilian Tinamou
- Brazoria NWR
- Brazoria NWR(Texas Gulf Coast)
- Brazoria National Wildlife Refuge
- Brazos Bend SP
- Brazos Bend State Park
- Brazza's Martin
- Breckland
- Breckland Norfolk/Suffolk
- Brehm's Tiger-Parrot
- Brehm's Tiger Parrot
- Breidafjordur and the Snaefellsnes Peninsula
- Breidafjordur and the Snaefellsnes Peninsula Iceland
- Brent Goose
- Brewer's Blackbird
- Brewer's Sparrow
- Breydon Water
- Breydon Water (England)
- Briar Warbler
- Bridled Honeyeater
- Bridled Quail-Dove
- Bridled Sparrow
- Bridled Tern
- Bridled Titmouse
- Bridled White-eye
- Brigantine
- Bright-capped Cisticola
- Bright-green Warbler
- Bright-rumped Attila
- Bright-rumped Yellow-Finch
- Bright-rumped Yellow Finch
- Brigida's Woodcreeper
- Brimstone Canary
- Bristle-crowned Starling
- Bristle-nosed Barbet
- Bristle-thighed Curlew
- Bristled Grass-Warbler
- Bristled Grass Warbler
- Bristled Grassbird
- Bristled Shrike
- Bristlehead
- Britain
- British Butterflies - An Identification Guide
- British Columbia
- British Isles
- British Overseas Territories
- British Virgin Islands
- Broad-Winged Hawk
- Broad-billed Fairywren
- Broad-billed Flycatcher
- Broad-billed Hummingbird
- Broad-billed Manakin
- Broad-billed Motmot
- Broad-billed Myiagra
- Broad-billed Prion
- Broad-billed Roller
- Broad-billed Sandpiper
- Broad-billed Sapayoa
- Broad-billed Tody
- Broad-billed Warbler
- Broad-crested Corella
- Broad-ringed White-eye
- Broad-tailed Grassbird
- Broad-tailed Hummingbird
- Broad-tailed Paradise-Whydah
- Broad-tailed Paradise Whydah
- Broad-tipped Hermit
- Broad-winged Hawk
- Brockholes Quarry
- Brockholes quarry(Preston, Fulwood ,)
- Brolga
- Bronze-backed Flowerpecker
- Bronze-brown Cowbird


