The Greater Cuckoo (Cuculus canorus) is a bird known for its distinctive call and unique breeding behavior. It is a member of the family Cuculidae and is found across Europe, Asia, and parts of Africa. The male is recognized by its grayish-brown plumage and striking yellow eyes, while the female is similar but slightly larger. This bird is famous for its brood parasitism, where it lays its eggs in the nests of other bird species, such as warblers and finches. The host birds then raise the cuckoo chicks, often at the expense of their own offspring.