Plantilla:Ficha of taxón Cuculus is a genre of birds cuculiformes of the family proper Cuculidae of Old Mundo, with major diversida in the south and the tropical Southeast of Asia. They are known by the vulgar name of cuckoos.
These birds have variable sizes with thin bodies, long tail and strong paws Many people live in open forest, others in the prairies. Many species are migratory.
The cuckoos are parasites, they put only one egg in nests of varied guests paseriformes. The female replaces one of the eggs of the guest by the proper one. The egg of the cuckoo emerges before that of the guest, and the chick grows more rapid; in many cases this one expels the eggs or the newborn babies of the species parasitada.
The cuculiformes not parasites put white eggs, but the Cuculus species, parasites, make eggs colored to cheat its guests. There are specializing females in parasitar a particular species, and its eggs are very similar to those of the hospedante.
19 Cuculus species are known: [1]