The Oriental Cuckoo (Cuculus optatus) is a species of bird (Aves) in the family Cuculidae (Cuckoos) and order Cuculiformes (Cuckoos).
Cuculus gularis
Cuculus clamosus
Cuculus canorus
Cuculus saturatus
Cuculus micropterus
Cuculus poliocephalus
Cuculus rochii
Cuculus optatus
Cuculus solitarius
Cuculus crassirostris
Cuculus lepidus