A common cuckoo, a species native to Europe and Asia, made several recent appearances in Riverhead, N.Y. The birds have been spotted in a handful of places in the lower 48 states, experts said.

Maybe these finches aren’t so cuckoo after all. The African cuckoo finch is a notorious trickster, short-cutting the chores of parenthood by hiding its eggs in the nest of the African tawny-flanked ...

Cuckoo—host interactions provide classical examples of coevolution. Cuckoos place hosts under selection to detect and reject foreign eggs, while host defences result in the evolution of host-egg ...

For some birds, recognizing their own eggs can be a matter of life or death. In a new study, scientists have shown that many birds affected by the parasitic Common Cuckoo -- which lays its lethal ...