Capella gallinago – synonym of Gallinago gallinago
Capella media – synonym of Gallinago media
Casmerodius albus – synonym of Egretta alba
Charadrius apricarius – synonym of Pluvialis apricaria
Chloris chloris – synonym of Carduelis chloris
Coloeus monedula – synonym of Corvus monedula
Corvus cornix – synonym of Corvus corone
Corvus orientalis – synonym of Corvus corone