- Cereopsis novaehollandiae
- Cerise-crowned Jacamar
- Cerorhinca
- Cerorhinca monocerata
- Certhia
- Certhia americana
- Certhia brachydactyla
- Certhia discolor
- Certhia familiaris
- Certhia himalayana
- Certhia hodgsoni
- Certhia manipurensis
- Certhia nipalensis
- Certhia tianquanensis
- Certhiasomus stictolaemus
- Certhiaxis
- Certhiaxis cinnamomea
- Certhiaxis cinnamomeus
- Certhiaxis cinnamomeus cinnamomeus
- Certhiaxis mustelina
- Certhiaxis mustelinus
- Certhidea
- Certhidea fusca
- Certhidea olivacea
- Certhiidae
- Certhilauda
- Certhilauda albescens
- Certhilauda barlowi
- Certhilauda benguelensis
- Certhilauda brevirostris
- Certhilauda burra
- Certhilauda chuana
- Certhilauda curvirostris
- Certhilauda damarensis
- Certhilauda erythrochlamys
- Certhilauda semitorquata
- Certhilauda subcoronata
- Certhionyx
- Certhionyx niger
- Certhionyx pectoralis
- Certhionyx variegatus
- Cerulean-capped Manakin
- Cerulean Cuckoo-shrike
- Cerulean Cuckooshrike
- Cerulean Kingfisher
- Cerulean Paradise-Flycatcher
- Cerulean Paradise Flycatcher
- Cerulean Warbler
- Ceryle
- Ceryle Rudis
- Ceryle alcyon
- Ceryle lugubris
- Ceryle rudis
- Ceryle torquata
- Cetti's Warbler
- Cettia
- Cettia Cetti
- Cettia acanthizoides
- Cettia annae
- Cettia brunnescens
- Cettia brunnifrons
- Cettia canturians
- Cettia carolinae
- Cettia castaneocoronata
- Cettia cetti
- Cettia diphone
- Cettia flavolivacea
- Cettia fortipes
- Cettia haddeni
- Cettia major
- Cettia pallidipes
- Cettia parens
- Cettia ruficapilla
- Cettia seebohmi
- Cettia vulcania
- Cettiidae
- Cettis warbler
- Ceuthmochares
- Ceuthmochares aereus
- Ceuthmochares australis
- Cevennes National Park
- Cevennes National Park (France)
- Ceylon
- Ceylon Babbler
- Ceylon Bay-Owl
- Ceylon Black Drongo
- Ceylon Bush-Warbler
- Ceylon Bush Warbler
- Ceylon Crested Drongo
- Ceylon Frogmouth
- Ceylon Grackle
- Ceylon Gray Hornbill
- Ceylon Grey Hornbill
- Ceylon Hanging Parrot
- Ceylon Iora
- Ceylon Junglefowl
- Ceylon Magpie
- Ceylon Myna
- Ceylon Rufous Babbler
- Ceylon Scimitar-Babbler
- Ceylon Scimitar Babbler
- Ceylon Spurfowl
- Ceylon Starling
- Ceylon Swallow
- Ceylon Trogon
- Ceylon Whistling-Thrush
- Ceylon Whistling Thrush
- Ceylon White-bellied Drongo
- Ceylon White-eye
- Ceylon White-headed Myna
- Ceylon White-headed Starling
- Ceylon Wood Pigeon
- Ceylonese Frogmouth
- Ceyx
- Ceyx argentata
- Ceyx argentatus
- Ceyx azurea
- Ceyx azureus
- Ceyx cajeli
- Ceyx collectoris
- Ceyx cyanopectus
- Ceyx dispar
- Ceyx erithaca
- Ceyx erithaca motleyi
- Ceyx erithacus
- Ceyx fallax
- Ceyx flumenicola
- Ceyx flumenicolus
- Ceyx gentianus
- Ceyx lecontei
- Ceyx lepidus
- Ceyx madagascariensis
- Ceyx malaitae
- Ceyx margarethae
- Ceyx meeki
- Ceyx melanurus
- Ceyx mulcatus
- Ceyx nigromaxilla
- Ceyx pallidus
- Ceyx pictus
- Ceyx pusilla
- Ceyx pusillus
- Ceyx rufidorsa
- Ceyx rufidorsa motleyi
- Ceyx sacerdotis
- Ceyx solitarius
- Ceyx uropygialis
- Ceyx wallacii
- Ceyx websteri
- Chabert's Vanga
- Chabert Vanga
- Chablais de Cudrefin
- Chachalaca
- Chachalacas
- Chaco Chachalaca
- Chaco Eagle
- Chaco Earthcreeper
- Chaco National Park
- Chaco Nothura
- Chaco Owl
- Chaco Pipit
- Chaco Puffbird
- Chaco Suiriri
- Chad
- Chad Firefinch
- Chaetocercus
- Chaetocercus astreans
- Chaetocercus berlepschi
- Chaetocercus bombus
- Chaetocercus helidor helidor
- Chaetocercus heliodor
- Chaetocercus heliodor heliodor
- Chaetocercus jourdanii
- Chaetocercus mulsanti
- Chaetopidae
- Chaetops
- Chaetops aurantius
- Chaetops frenatus
- Chaetoptila
- Chaetoptila angustipluma
- Chaetorhynchus
- Chaetorhynchus papuensis
- Chaetornis
- Chaetornis striata
- Chaetornis striatus
- Chaetura
- Chaetura andrei
- Chaetura brachyura
- Chaetura chapmani
- Chaetura cinereiventris
- Chaetura egregia
- Chaetura fumosa
- Chaetura martinica
- Chaetura meridionalis
- Chaetura pelagica
- Chaetura spinicauda
- Chaetura vauxi
- Chaetura viridipennis
- Chaffinch
- Chaimarrornis
- Chaimarrornis leucocephalus
- Chalcites
- Chalcites basalis
- Chalcites crassirostris
- Chalcites minutillus
- Chalcomitra
- Chalcomitra adelberti
- Chalcomitra amethystina
- Chalcomitra balfouri
- Chalcomitra fuliginosa
- Chalcomitra hunteri
- Chalcomitra rubescens
- Chalcomitra senegalensis
- Chalcomitra senegalensis lamperti
- Chalcoparia
- Chalcoparia singalensis
- Chalcophaps
- Chalcophaps indica
- Chalcophaps indica maxima
- Chalcophaps indica natalis
- Chalcophaps longirostris
- Chalcophaps longirostris rogersi
- Chalcophaps stephani
- Chalcopsitta
- Chalcopsitta atra
- Chalcopsitta cardinalis
- Chalcopsitta duivenbodei
- Chalcopsitta scintillata
- Chalcopsitta sintillata
- Chalcostigma
- Chalcostigma herrani
- Chalcostigma heteropogon
- Chalcostigma olivaceum
- Chalcostigma ruficeps
- Chalcostigma stanleyi
- Chalk-browed Mockingbird
- Chalybura
- Chalybura buffonii
- Chalybura urochrysia
- Chalybura urochrysia melanorrhoa
- Chamaea
- Chamaea fasciata
- Chamaepetes
- Chamaepetes goudotii
- Chamaepetes goudotii sanctaemarthae
- Chamaepetes unicolor
- Chamaetylas
- Chamaetylas choloensis
- Chamaetylas fuelleborni
- Chamaetylas poliocephala
- Chamaetylas poliophrys
- Chamaeza
- Chamaeza campanisona
- Chamaeza meruloides
- Chamaeza mollissima
- Chamaeza nobilis
- Chamaeza ruficauda
- Chamaeza turdina
- Chameleon Dwarf Kingfisher
- Changeable Hawk-Eagle
- Changeable Hawk Eagle
- Changeable Hawkeagle
- Channel-billed Cuckoo
- Channel-billed Toucan
- Channel Islands
- Channel Islands National Park
- Chapada Flycatcher
- Chapada Suiriri
- Chapada dos Guimaraes
- Chapada dos Guimarães
- Chapada dos Guimarães (Mato Grosso, Brazil)
- Chapel Wood
- Chapel Wood RSPB Reserve
- Chapin's Alseonax
- Chapin's Apalis
- Chapin's Babbler
- Chapin's Crombec
- Chapin's Flycatcher
- Chapin's Mountain-Babbler
- Chapin's Mountain-babbler
- Chapin's Mountain Babbler
- Chapin's Spine-tailed Swift
- Chapin's Spinetail
- Chapin's Swift
- Chaplin's Barbet
- Chapman's Antshrike
- Chapman's Bristle-Tyrant
- Chapman's Bristle Tyrant
- Chapman's Parakeet
- Chapman's Swift
- Chapman's Trogon
- Chapman's Tyrannulet
- Charadriidae
- Charadriiformes
- Charadrius
- Charadrius Marginatus
- Charadrius alexandrinus
- Charadrius alexandrinus dealbatus
- Charadrius alticola
- Charadrius asiaticus
- Charadrius atrifrons
- Charadrius australis
- Charadrius bicinctus
- Charadrius bicinctus exilis
- Charadrius collaris
- Charadrius collaris collaris
- Charadrius cucullatus
- Charadrius dealbatus
- Charadrius dubius
- Charadrius falklandicus
- Charadrius forbesi
- Charadrius hiaticula
- Charadrius javanicus
- Charadrius leschenaultii
- Charadrius leschenaultii leschenaultii
- Charadrius marginatus
- Charadrius melanops
- Charadrius melodus
- Charadrius modestus
- Charadrius mongolus
- Charadrius montanus
- Charadrius morinellus
- Charadrius nivosus
- Charadrius nivosus nivosus
- Charadrius obscurus
- Charadrius pallidus
- Charadrius pecuarius
- Charadrius peronii
- Charadrius placidus
- Charadrius rubricollis
- Charadrius ruficapillus
- Charadrius sanctaehelenae
- Charadrius semipalmatus
- Charadrius thoracicus
- Charadrius tricollaris
- Charadrius veredus
- Charadrius vociferus
- Charadrius vociferus vociferus
- Charadrius wilsonia
- Charcones de Miguel Esteban
- Charitospiza
- Charitospiza eucosma
- Charles L. Tilden Regional Park
- Charles Mockingbird
- Charlotte's Bulbul


