- Coracina bicolor
- Coracina boyeri
- Coracina caeruleogrisea
- Coracina caesia
- Coracina caledonica
- Coracina caledonica caledonica
- Coracina ceramensis
- Coracina ceramensis ceramensis
- Coracina cinerea
- Coracina coerulescens
- Coracina cucullata
- Coracina dispar
- Coracina dobsoni
- Coracina dohertyi
- Coracina fimbriata
- Coracina fortis
- Coracina graueri
- Coracina holopolia
- Coracina incerta
- Coracina ingens
- Coracina insperata
- Coracina javensis
- Coracina larvata
- Coracina leucopygia
- Coracina lineata
- Coracina longicauda
- Coracina macei
- Coracina macei siamensis
- Coracina maxima
- Coracina mcgregori
- Coracina melanoptera
- Coracina melas
- Coracina melaschistos
- Coracina mindanensis
- Coracina monacha
- Coracina montana
- Coracina morio
- Coracina nesiotis
- Coracina newtoni
- Coracina novaehollandiae
- Coracina ostenta
- Coracina papuensis
- Coracina papuensis elegans
- Coracina parvula
- Coracina pectoralis
- Coracina personata
- Coracina polioptera
- Coracina remota
- Coracina salomonis
- Coracina schistacea
- Coracina schisticeps
- Coracina striata
- Coracina striata difficilis
- Coracina sula
- Coracina temminckii
- Coracina tenuirostris
- Coracina typica
- Coracina welchmani
- Coracopsis
- Coracopsis barklyi
- Coracopsis nigra
- Coracopsis vasa
- Coracornis
- Coracornis raveni
- Coracornis sanghirensis
- Coragyps
- Coragyps atratus
- Coragyps atratus brasiliensis
- Coraki, Oyster Harbor(Area in & around Albany, Western Australia -)
- Coraki and Oyster Harbor
- Coral-billed Ground-Cuckoo
- Coral-billed Ground Cuckoo
- Coral-billed Nuthatch
- Coral-billed Scimitar-Babbler
- Coral-billed Scimitar Babbler
- Coral-billed Vanga
- Coralbill
- Corapipo
- Corapipo altera
- Corapipo gutturalis
- Corapipo leucorrhoa
- Coraya Wren
- Corazon del Bosque Ecological Park (Solola)
- Corazón del Bosque Ecological Park(Sololá)
- Corazón del Bosque Ecological Park (Sololá)
- Corcoracidae
- Corcorax
- Corcorax melanoramphos
- Corcorax melanorhamphos
- Cordillera Azul Antbird
- Cordillera Ground Warbler
- Cordilleran Canastero
- Cordilleran Flycatcher
- Cordilleran Parakeet
- Cordilleran Snipe
- Cordoba Cinclodes
- Corkscrew Swamp Sanctuary
- Corkscrew Swamp Sanctuary(Naples, FL 33964 Route 6, Box 1875-A)
- Cormobates
- Cormobates leucophaea
- Cormobates leucophaea metastasis
- Cormobates leucophaeus
- Cormobates placens
- Cormorant
- Cormorants
- Corn Bunting
- Corn Crake
- Corncrake
- Cornish Chough
- Cornwall
- Coroneted Fruit-Dove
- Coroneted Fruit Dove
- Correndera Pipit
- Corse
- Corsica
- Corsican Finch
- Corsican Nuthatch
- Corvid
- Corvidae
- Corvinella
- Corvinella corvina
- Corvinella melanoleuca
- Corvultur
- Corvus
- Corvus albicollis
- Corvus albus
- Corvus antipodum
- Corvus benghalensis
- Corvus bennetti
- Corvus boreus
- Corvus brachyrhynchos
- Corvus brachyrhynchos hesperis
- Corvus capensis
- Corvus caurinus
- Corvus corax
- Corvus corax clarionensis
- Corvus corax principalis
- Corvus corax varius
- Corvus cornix
- Corvus cornix cornix
- Corvus corone
- Corvus corone Cornix
- Corvus corone cornix
- Corvus corone corone
- Corvus corone corvix
- Corvus corone orientalis
- Corvus coronoides
- Corvus coronoides coronoides
- Corvus crassirostris
- Corvus cryptoleucus
- Corvus culminatus
- Corvus dauuricus
- Corvus edithae
- Corvus enca
- Corvus florensis
- Corvus frugilegus
- Corvus frugilegus pastinator
- Corvus fuscicapillus
- Corvus hawaiiensis
- Corvus imparatus
- Corvus insularis
- Corvus jamaicensis
- Corvus kubaryi
- Corvus leucognaphalus
- Corvus levaillantii
- Corvus macrorhynchos
- Corvus macrorhynchos culminatus
- Corvus macrorhynchos japonensis
- Corvus macrorhynchos levaillantii
- Corvus macrorhynchos macrorhynchos
- Corvus macrorhynchos tibetosinensis
- Corvus meeki
- Corvus mellori
- Corvus minutus
- Corvus monedula
- Corvus monedula spermologus
- Corvus moneduloides
- Corvus nasicus
- Corvus orru
- Corvus ossifragus
- Corvus palmarum
- Corvus pectoralis
- Corvus rhipidurus
- Corvus rhipidurus rhipidurus
- Corvus ruficollis
- Corvus sinaloae
- Corvus splendens
- Corvus tasmanicus
- Corvus torquatus
- Corvus tristis
- Corvus tropicus
- Corvus typicus
- Corvus unicolor
- Corvus validus
- Corvus violaceus
- Corvus woodfordi
- Cory's Shearwater
- Corydon
- Corydon sumatranus
- Corydospiza alaudina
- Coryphaspiza
- Coryphaspiza melanotis
- Coryphistera
- Coryphistera alaudina
- Coryphospingus
- Coryphospingus cucullatus
- Coryphospingus pileatus
- Coryphospingus pileatus brevicaudus
- Corythaeola
- Corythaeola cristata
- Corythaixoides
- Corythaixoides concolor
- Corythaixoides leucogaster
- Corythaixoides personata
- Corythaixoides personatus
- Corythopis
- Corythopis delalandi
- Corythopis torquata
- Corythornis
- Corythornis cristatus
- Corythornis leucogaster
- Corythornis madagascariensis
- Corythornis nais
- Corythornis thomensis
- Corythornis vintsioides
- Coscoroba
- Coscoroba Swan
- Coscoroba coscoroba
- Cosmeston Country Park
- Cosmeston Country Park(Vale of Glamorgan)
- Cosmopsarus
- Cosmopsarus fischeri
- Cosmopsarus regius
- Cosmopsarus unicolor
- Cossypha
- Cossypha Caffra
- Cossypha albicapilla
- Cossypha albicapillus
- Cossypha anomala
- Cossypha archeri
- Cossypha caffra
- Cossypha caffra caffra
- Cossypha cyanocampter
- Cossypha cyanocampter bartelloti
- Cossypha dichroa
- Cossypha heinrichi
- Cossypha heuglini
- Cossypha humeralis
- Cossypha isabellae
- Cossypha natalensis
- Cossypha niveicapilla
- Cossypha polioptera
- Cossypha roberti
- Cossypha semirufa
- Cossyphicula
- Costa's Hummingbird
- Costa Rica
- Costa Rican Brush Finch
- Costa Rican Brushfinch
- Costa Rican Pygmy-Owl
- Costa Rican Pygmy Owl
- Costa Rican Swift
- Costa Rican Warbler
- Costanera Sur Ecological Reserve
- Costanera Sur Ecological Reserve(Buenos Aires city)
- Cotinga Pompadour
- Cotinga amabilis
- Cotinga cayana
- Cotinga cotinga
- Cotinga maculata
- Cotinga maynana
- Cotinga nattererii
- Cotinga ridgwayi
- Cotingidae
- Coto Donana National Park
- Coto Doñana National Park
- Cotopaxi National Park
- Cotswold Water Park
- Cotton Pygmy-Goose
- Cotton Pygmy-goose
- Cotton Pygmy Goose
- Coturnicops
- Coturnicops exquisitus
- Coturnicops notatus
- Coturnicops noveboracensis
- Coturnix
- Coturnix adansonii
- Coturnix africana
- Coturnix chinensis
- Coturnix coromandelica
- Coturnix coturnix
- Coturnix delegorguei
- Coturnix japonica
- Coturnix novaezelandiae
- Coturnix pectoralis
- Coturnix ypsilophora
- Coua
- Coua caerulea
- Coua coquereli
- Coua cristata
- Coua cursor
- Coua delalandei
- Coua gigas
- Coua reynaudii
- Coua ruficeps
- Coua serriana
- Coua verreauxi
- Couch's Kingbird
- Coues's Arctic Redpoll
- Count Raggi's Bird-of-paradise
- Count Raggi's Bird of Paradise
- County Durham
- Courtois's Laughingthrush
- Cowans Gap State Park
- Cowans Gap State Park(Allens Valley of Fulton County)
- Cowpen Bewley Woodland Park
- Cozumel Emerald
- Cozumel Thrasher
- Cozumel Vireo
- Cozumel Wren
- Crab-plover
- Crab Plover
- Cracidae
- Cracticidae
- Cracticus
- Cracticus argenteus
- Cracticus cassicus
- Cracticus louisiadensis
- Cracticus mentalis
- Cracticus nigrogularis
- Cracticus quoyi
- Cracticus tibicen
- Cracticus torquatus
- Cracticus torquatus leucopterus
- Crag Chestnut-winged Starling
- Crag Chilia
- Craig Y Cilau NNR
- Crake
- Crakes
- Crane
- Crane Hawk
- Cranes
- Cranioleuca
- Cranioleuca albicapilla
- Cranioleuca albiceps


