Cuckoos sneak their eggs into other birds’ nests and copy egg colors to avoid detection. This study explains how they adjust to many hosts.

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 Cuculus ...

A bird sighting on New York's Long Island has avian enthusiasts flocking to the region in the hopes of spotting a feathered friend who has never been seen before in the state.

LONDON — Britain’s cuckoo bird, known for its distinctive call, is in danger of extinction along with 51 other species, the Royal Society for the Protection of Birds said in a new report Thursday. It ...

Clever birds figure out how to trick others into raising their kids A common Cuckoo chick in Reed Wablers nest waits to be fed with its mouth wide open, in this undated file photo. Getty Images — ...

Birders are going cuckoo for a rare sight on Long Island. The common cuckoo bird has been spotted only four times in U.S. history in the lower 48 states, experts say. Now, it's in Riverhead. Hundreds ...

A bird sighting on New York's Long Island has avian enthusiasts flocking to the region in hopes of spotting a feathered friend that has never been seen before in the state. The common cuckoo is ...