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Slaty Gnateater
Conopophaga ardesiaca
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Slaty Spinetail
Synallaxis brachyura
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Slaty Vireo
Vireo brevipennis
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Slaty-backed Chat-Tyrant
Ochthoeca cinnamomeiventris
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Slaty-backed Flycatcher
Ficedula erithacus
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Slaty-backed Forest-Falcon
Micrastur mirandollei
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Slaty-backed Forktail
Enicurus schistaceus
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Slaty-backed Gull
Larus schistisagus
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Slaty-backed Nightingale-Thrush
Catharus fuscater
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Slaty-bellied Tesia
Tesia olivea
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Slaty-blue Flycatcher
Ficedula tricolor
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Slaty-breasted Rail
Lewinia striata
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Slaty-breasted Tinamou
Crypturellus boucardi
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Slaty-breasted Wood-Rail
Aramides saracura
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Slaty-capped Flycatcher
Leptopogon superciliaris
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Slaty-capped Shrike-Vireo
Vireolanius leucotis
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Slaty-headed Parakeet
Psittacula himalayana
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Slaty-legged Crake
Rallina eurizonoides
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Slaty-tailed Trogon
Trogon massena
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Slaty-winged Foliage-gleaner
Philydor fuscipenne
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Slender Antbird
Rhopornis ardesiacus
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Slender Meadow Katydid
Conocephalus fasciatus
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Slender-billed Crow
Corvus enca
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Slender-billed Greenbul
Stelgidillas gracilirostris
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Slender-billed Gull
Chroicocephalus genei
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Slender-billed Kite
Helicolestes hamatus
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Slender-billed Miner
Geositta tenuirostris
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Slender-billed Oriole
Oriolus tenuirostris
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Slender-billed Parakeet
Enicognathus leptorhynchus
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Slender-billed Scimitar-Babbler
Pomatorhinus superciliaris
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Slender-billed Starling
Onychognathus tenuirostris
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Slender-billed Tyrannulet
Inezia tenuirostris
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Slender-billed Xenops
Xenops tenuirostris
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Slender-footed Tyrannulet
Zimmerius gracilipes
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Slender-tailed Nightjar
Caprimulgus clarus
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Small Buttonquail
Turnix sylvaticus
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Small Minivet
Pericrocotus cinnamomeus
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Small Niltava
Niltava macgrigoriae
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Small Pratincole
Glareola lactea
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Small-billed Elaenia
Elaenia parvirostris
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Small-billed Tinamou
Crypturellus parvirostris
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Small-headed Elaenia
Elaenia sordida
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Smew
Mergellus albellus
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Smith's Longspur
Calcarius pictus
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Smoke-colored Pewee
Contopus fumigatus
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Smoky Bush-Tyrant
Myiotheretes fumigatus
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Smoky Warbler
Phylloscopus fuligiventer
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Smoky-brown Woodpecker
Dryobates fumigatus
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Smoky-fronted Tody-Flycatcher
Poecilotriccus fumifrons
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Smooth-billed Ani
Crotophaga ani
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Snail Kite
Rostrhamus sociabilis
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Snethlage's Antpitta
Hylopezus paraensis
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Snethlage's Tody-Tyrant
Hemitriccus minor
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Snow Bunting
Plectrophenax nivalis
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Snow Goose
Anser caerulescens
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Snow-capped Manakin
Lepidothrix nattereri
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Snowy Egret
Egretta thula
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Snowy Owl
Bubo scandiacus
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Snowy Plover
Charadrius nivosus
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Snowy Tree Cricket
Oecanthus fultoni
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Snowy-browed Flycatcher
Ficedula hyperythra
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Snowy-browed Nuthatch
Sitta villosa
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Snowy-crowned Robin-Chat
Cossypha niveicapilla
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Snowy-crowned Tern
Sterna trudeaui
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Snowy-throated Kingbird
Tyrannus niveigularis
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Sociable Weaver
Philetairus socius
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Social Flycatcher
Myiozetetes similis
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Solitary Black Cacique
Cacicus solitarius
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Solitary Eagle
Buteogallus solitarius
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Solitary Sandpiper
Tringa solitaria
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Solitary Tinamou
Tinamus solitarius
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Somali Short-toed Lark
Alaudala somalica
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Somali Tit
Melaniparus thruppi
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Sombre Greenbul
Andropadus importunus
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Sombre Hummingbird
Eupetomena cirrochloris
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Sombre Kingfisher
Todiramphus funebris
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Sombre Tit
Poecile lugubris
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Song Sparrow
Melospiza melodia
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Song Thrush
Turdus philomelos
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Song Wren
Cyphorhinus phaeocephalus
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Sooretama Slaty-Antshrike
Thamnophilus ambiguus
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Sooty Ant-Tanager
Habia gutturalis
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Sooty Antbird
Hafferia fortis
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Sooty Chat
Myrmecocichla nigra
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Sooty Grassquit
Asemospiza fuliginosa
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Sooty Grouse
Dendragapus fuliginosus
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Sooty Owl
Tyto tenebricosa
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Sooty Oystercatcher
Haematopus fuliginosus
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Sooty Shearwater
Ardenna grisea
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Sooty Tern
Onychoprion fuscatus
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Sooty Thicket-Fantail
Rhipidura threnothorax
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Sooty Thrush
Turdus nigrescens
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Sooty Tyrannulet
Serpophaga nigricans
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Sooty-capped Babbler
Malacopteron affine
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Sooty-capped Chlorospingus
Chlorospingus pileatus
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Sooty-crowned Flycatcher
Myiarchus phaeocephalus
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Sooty-faced Finch
Arremon crassirostris
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Sooty-fronted Spinetail
Synallaxis frontalis
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Sooty-headed Bulbul
Pycnonotus aurigaster
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Sooty-headed Tyrannulet
Phyllomyias griseiceps
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