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Shikra
Accipiter badius
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Shining Bronze-Cuckoo
Chrysococcyx lucidus
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Shining Drongo
Dicrurus atripennis
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Shining Flycatcher
Myiagra alecto
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Shining Sunbird
Cinnyris habessinicus
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Shiny Cowbird
Molothrus bonariensis
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Shiny Whistling-Thrush
Myophonus melanurus
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Short-billed Canastero
Asthenes baeri
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Short-billed Dowitcher
Limnodromus griseus
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Short-billed Gull
Larus brachyrhynchus
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Short-billed Leaftosser
Sclerurus rufigularis
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Short-billed Miner
Geositta antarctica
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Short-billed Pigeon
Patagioenas nigrirostris
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Short-billed Pipit
Anthus furcatus
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Short-clawed Lark
Certhilauda chuana
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Short-crested Flycatcher
Myiarchus ferox
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Short-eared Owl
Asio flammeus
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Short-tailed Antthrush
Chamaeza campanisona
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Short-tailed Babbler
Pellorneum malaccense
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Short-tailed Batis
Batis mixta
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Short-tailed Field Tyrant
Muscigralla brevicauda
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Short-tailed Hawk
Buteo brachyurus
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Short-tailed Nighthawk
Lurocalis semitorquatus
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Short-tailed Parrot
Graydidascalus brachyurus
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Short-tailed Pygmy-Tyrant
Myiornis ecaudatus
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Short-tailed Scimitar-Babbler
Napothera danjoui
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Short-tailed Shearwater
Ardenna tenuirostris
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Short-tailed Swift
Chaetura brachyura
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Short-toed Coucal
Centropus rectunguis
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Short-toed Snake-Eagle
Circaetus gallicus
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Short-toed Treecreeper
Certhia brachydactyla
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Short-winged Meadow Katydid
Conocephalus brevipennis
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Shrike-like Cotinga
Laniisoma elegans
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Shy Heathwren
Hylacola cauta
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Siberian Accentor
Prunella montanella
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Siberian Blue Robin
Larvivora cyane
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Siberian Crane
Leucogeranus leucogeranus
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Siberian Jay
Perisoreus infaustus
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Siberian Rubythroat
Calliope calliope
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Siberian Stonechat
Saxicola maurus
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Siberian Thrush
Geokichla sibirica
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Sibilant Sirystes
Sirystes sibilator
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Sichuan Leaf Warbler
Phylloscopus forresti
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Sichuan Tit
Poecile weigoldicus
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Sick's Swift
Chaetura meridionalis
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Sickle-billed Vanga
Falculea palliata
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Sickle-winged Chat
Emarginata sinuata
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Sickle-winged Guan
Chamaepetes goudotii
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Sickle-winged Nightjar
Eleothreptus anomalus
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Sierra Madre Sparrow
Xenospiza baileyi
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Sierra Nevada Brushfinch
Arremon basilicus
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Sierran Elaenia
Elaenia pallatangae
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Siffling Cisticola
Cisticola brachypterus
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Sikkim Treecreeper
Certhia discolor
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Silky-tailed Nightjar
Antrostomus sericocaudatus
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Silver Gull
Chroicocephalus novaehollandiae
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Silver-beaked Tanager
Ramphocelus carbo
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Silver-breasted Broadbill
Serilophus lunatus
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Silver-eared Laughingthrush
Trochalopteron melanostigma
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Silver-eared Mesia
Leiothrix argentauris
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Silver-rumped Needletail
Rhaphidura leucopygialis
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Silver-throated Tanager
Tangara icterocephala
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Silver-throated Tit
Aegithalos glaucogularis
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Silvered Antbird
Sclateria naevia
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Silvereye
Zosterops lateralis
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Silvery Grebe
Podiceps occipitalis
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Silvery-cheeked Antshrike
Sakesphorus cristatus
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Silvery-cheeked Hornbill
Bycanistes brevis
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Silvery-fronted Tapaculo
Scytalopus argentifrons
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Silvery-throated Spinetail
Synallaxis subpudica
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Simple Greenbul
Chlorocichla simplex
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Sinai Rosefinch
Carpodacus synoicus
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Sinaloa Crow
Corvus sinaloae
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Sinaloa Wren
Thryophilus sinaloa
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Sincora Antwren
Formicivora grantsaui
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Sind Sparrow
Passer pyrrhonotus
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Singing Bushlark
Mirafra cantillans
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Singing Cisticola
Cisticola cantans
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Singing Honeyeater
Gavicalis virescens
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Singing Parrot
Geoffroyus heteroclitus
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Singing Quail
Dactylortyx thoracicus
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Siren
Siren
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Sirkeer Malkoha
Taccocua leschenaultii
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Slate-colored Antbird
Myrmelastes schistaceus
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Slate-colored Boubou
Laniarius funebris
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Slate-colored Coot
Fulica ardesiaca
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Slate-colored Grosbeak
Saltator grossus
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Slate-colored Hawk
Buteogallus schistaceus
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Slate-colored Seedeater
Sporophila schistacea
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Slate-colored Solitaire
Myadestes unicolor
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Slate-crowned Antpitta
Grallaricula nana
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Slate-headed Tody-Flycatcher
Poecilotriccus sylvia
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Slate-throated Gnatcatcher
Polioptila schistaceigula
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Slate-throated Redstart
Myioborus miniatus
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Slaty Antwren
Myrmotherula schisticolor
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Slaty Bristlefront
Merulaxis ater
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Slaty Brushfinch
Atlapetes schistaceus
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Slaty Elaenia
Elaenia strepera
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Slaty Finch
Spodiornis rusticus
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Slaty Flowerpiercer
Diglossa plumbea
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