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Blue-fronted Flycatcher
Cyornis hoevelli
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Blue-fronted Parrotlet
Touit dilectissimus
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Blue-fronted Redstart
Phoenicurus frontalis
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Blue-fronted Robin
Cinclidium frontale
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Blue-gray Gnatcatcher
Polioptila caerulea
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Blue-gray Noddy
Anous ceruleus
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Blue-gray Robin
Peneothello cyanus
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Blue-gray Saltator
Saltator coerulescens
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Blue-gray Tanager
Thraupis episcopus
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Blue-headed Coucal
Centropus monachus
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Blue-headed Crested-Flycatcher
Trochocercus nitens
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Blue-headed Fantail
Rhipidura cyaniceps
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Blue-headed Macaw
Primolius couloni
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Blue-headed Parrot
Pionus menstruus
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Blue-headed Pitta
Hydrornis baudii
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Blue-headed Vireo
Vireo solitarius
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Blue-headed Wood-Dove
Turtur brehmeri
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Blue-lored Antbird
Hafferia immaculata
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Blue-naped Chlorophonia
Chlorophonia cyanea
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Blue-naped Mousebird
Urocolius macrourus
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Blue-naped Pitta
Hydrornis nipalensis
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Blue-necked Tanager
Stilpnia cyanicollis
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Blue-rumped Manakin
Lepidothrix isidorei
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Blue-rumped Parrot
Psittinus cyanurus
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Blue-rumped Pitta
Hydrornis soror
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Blue-shouldered Robin-Chat
Cossypha cyanocampter
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Blue-spotted Wood-Dove
Turtur afer
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Blue-tailed Bee-eater
Merops philippinus
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Blue-tailed Emerald
Chlorostilbon mellisugus
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Blue-tailed Trogon
Trogon comptus
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Blue-throated Barbet
Psilopogon asiaticus
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Blue-throated Bee-eater
Merops viridis
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Blue-throated Brown Sunbird
Cyanomitra cyanolaema
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Blue-throated Flycatcher
Cyornis rubeculoides
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Blue-throated Goldentail
Chlorestes eliciae
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Blue-throated Macaw
Ara glaucogularis
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Blue-throated Motmot
Aspatha gularis
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Blue-throated Mountain-gem
Lampornis clemenciae
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Blue-throated Piping-Guan
Pipile cumanensis
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Blue-winged Kookaburra
Dacelo leachii
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Blue-winged Laughingthrush
Trochalopteron squamatum
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Blue-winged Leafbird
Chloropsis cochinchinensis
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Blue-winged Macaw
Primolius maracana
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Blue-winged Minla
Actinodura cyanouroptera
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Blue-winged Mountain Tanager
Anisognathus somptuosus
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Blue-winged Pitta
Pitta moluccensis
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Blue-winged Teal
Spatula discors
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Blue-winged Warbler
Vermivora cyanoptera
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Bluethroat
Luscinia svecica
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Bluish Flowerpiercer
Diglossa caerulescens
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Bluish-fronted Jacamar
Galbula cyanescens
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Bluish-slate Antshrike
Thamnomanes schistogynus
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Blunt-winged Warbler
Acrocephalus concinens
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Blyth's Frogmouth
Batrachostomus affinis
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Blyth's Hornbill
Rhyticeros plicatus
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Blyth's Leaf Warbler
Phylloscopus reguloides
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Blyth's Paradise-Flycatcher
Terpsiphone affinis
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Blyth's Pipit
Anthus godlewskii
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Blyth's Reed Warbler
Acrocephalus dumetorum
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Blyth's Shrike-Babbler
Pteruthius aeralatus
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Boat-billed Flycatcher
Megarynchus pitangua
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Boat-billed Heron
Cochlearius cochlearius
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Boat-tailed Grackle
Quiscalus major
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Bobolink
Dolichonyx oryzivorus
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Bogota Rail
Rallus semiplumbeus
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Bohemian Waxwing
Bombycilla garrulus
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Bokmakierie
Telophorus zeylonus
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Bold-striped Tit-Babbler
Mixornis bornensis
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Bolivian Blackbird
Oreopsar bolivianus
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Bolivian Brushfinch
Atlapetes rufinucha
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Bolivian Earthcreeper
Tarphonomus harterti
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Bolivian Recurvebill
Syndactyla striata
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Bolivian Slaty-Antshrike
Thamnophilus sticturus
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Bolivian Tapaculo
Scytalopus bolivianus
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Bolivian Tyrannulet
Zimmerius bolivianus
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Bonaparte's Gull
Chroicocephalus philadelphia
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Bonin Petrel
Pterodroma hypoleuca
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Bonneted Bats
Eumops
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Booted Eagle
Hieraaetus pennatus
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Booted Racket-tail
Ocreatus underwoodii
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Booted Warbler
Iduna caligata
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Boreal Chickadee
Poecile hudsonicus
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Boreal Owl
Aegolius funereus
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Bornean Banded-Pitta
Hydrornis schwaneri
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Bornean Barbet
Psilopogon eximius
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Bornean Blue Flycatcher
Cyornis superbus
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Bornean Bristlehead
Pityriasis gymnocephala
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Bornean Green-Magpie
Cissa jefferyi
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Bornean Ground-Cuckoo
Carpococcyx radiceus
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Bornean Stubtail
Urosphena whiteheadi
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Bornean Treepie
Dendrocitta cinerascens
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Bornean Whistler
Pachycephala hypoxantha
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Bornean Wren-Babbler
Ptilocichla leucogrammica
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Botteri's Sparrow
Peucaea botterii
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Boucard's Wren
Campylorhynchus jocosus
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Bower's Shrikethrush
Colluricincla boweri
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Brahminy Kite
Haliastur indus
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Brahminy Starling
Sturnia pagodarum
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Brambling
Fringilla montifringilla
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Bran-colored Flycatcher
Myiophobus fasciatus
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