An MP3 file designed to aggravate music swapping users and help deter illegal copying. Cuckoo eggs are either erroneously named or edited. For example, a song with a heavy metal title is really ...

The cuckoo lays its eggs in the nest of an unwitting host species and after hatched, the parasite nestling often evicts the host eggs or young, ensuring maximum resources for itself. While some hosts ...

Say a cuckoo lays eggs in nests in two neighboring areas ... If cuckoo chicks can grow in varied environments on different diets, and match their behavior and even their songs to their host ...

This story appears in the January 2018 issue of National Geographic magazine. For the care and feeding of its offspring, the common cuckoo outsources. When she’s ready to lay an egg, a female ...