Calandrella brachydactyla (Short-toed Lark)
Calandrella rufescens (Lesser Short-toed Lark)
Calcarius lapponicus (Lapland Bunting)
Calidris ferruginea (Curlew Sandpiper)
Calidris maritima (Purple Sandpiper)
Calidris minuta (Little Stint)
Calidris temminckii (Temminck's Stint)
Calonectris diomedea (Cory's Shearwater)
Caprimulgus europaeus (European Nightjar)
Caprimulgus ruficollis (Red-necked Nightjar)
Carduelis carduelis (Goldfinch)
Carduelis chloris (Greenfinch)
Carduelis flammea (Common Redpoll)
Carduelis flavirostris (Twite)
Carduelis hornemanni (Arctic Redpoll)
Carduelis spinus (Eurasian Siskin)
Carpodacus erythrinus (Scarlet Rosefinch)
Cepphus grylle (Black Guillemot)
Cercotrichas galactotes (Rufous-tailed Bushchat)
Certhia brachydactyla (Short-toed Treecreeper)
Certhia familiaris (Eurasian Treecreeper)
Cettia cetti (Cetti's Warbler)
Charadrius alexandrinus (Kentish Plover)
Charadrius asiaticus (Caspian Plover)
Charadrius dubius (Little Ringed Plover)
Charadrius hiaticula (Great Ringed Plover)
Charadrius morinellus (Dotterel)
Chersophilus duponti (Dupont's Lark)
Chlidonias hybridus (Whiskered Tern)
Chlidonias leucopterus (White-winged Black Tern)
Circaetus gallicus (Short-toed Eagle)
Circus aeruginosus (Marsh Harrier)
Circus macrourus (Pallid Harrier)
Circus pygargus (Montagu's Harrier)
Cisticola juncidis (Fan-tailed Warbler)
Clamator glandarius (Great Spotted Cuckoo)
Clangula hyemalis (Long-tailed Duck)
Coccothraustes coccothraustes (Hawfinch)
Columba palumbus (Wood Pigeon)
Coracias garrulus (European Roller)
Coturnix coturnix (Common Quail)
Cuculus canorus (Common Cuckoo)
Cyanopica cyanus (Azure-winged Magpie)