Common cuckoo Common cuckoo The common cuckoo ("Cuculus canorus") is a member of the cuckoo order of birds, "Cuculiformes", which includes the roadrunners, the anis and the coucals. This species is a widespread summer migrant to Europe and Asia, and winters in Africa. It is a brood parasite, which means it lays eggs in the nests of other bird species, particularly of dunnocks, meadow pipits, and reed warblers. Although its eggs are larger than those of its hosts, the eggs in each type of host nest resemble the host's eggs. The adult too is a mimic, in its case of the sparrowhawk;
Guira cuckoo Guira cuckoo The guira cuckoo ("Guira guira") is a gregarious bird found widely in open and semi-open habitats of eastern and southern Brazil, Uruguay, Paraguay, Bolivia, and northeastern Argentina. One of only four species within the subfamily Crotophaginae of the cuckoo family Cuculidae, "G. guira" is also the only species within the genus Guira. It is a rather scruffy-looking bird, with a total length of approximately . The sexes are very similar in appearance, except that the female is slightly larger than the male. Juveniles appear quite similar to adults. The species has dark brown upperparts streaked with white, and