Does a cuckoo know it's a cuckoo? The answer is more difficult than you might think, explains Richard Pallardy ...

A lot of us will change our wardrobe to fit into a crowd, and the brood parasite known as the cuckoo has used evolution to do the same thing. Because cuckoos lay their eggs in the nest of a host bird, ...

Many cuckoos like to outsource their parenting. These medium-sized birds lay their eggs in the nests of other bird species, tricking the unsuspecting hosts into raising their chicks. In some cuckoo ...