Cuckoo

Cuckoos include slender, tree-using birds as well as more ground-dwelling forms. Their calls can be distinctive, and many species make seasonal movements. Brood-parasitic cuckoos depend on other birds to incubate eggs and feed chicks, but that behavior is not shared by every cuckoo. Species also differ in diet, body size and habitat. Understanding the particular bird is essential before applying the familiar image of the common cuckoo to the whole family.