Mysterious, elusive, and full of surprises, this bird's behaviour will leave you questioning everything you thought you knew ...

This increases the chances of the host bird not rejecting the cuckoo’s eggs or abandoning the nest. Once cuckoo offspring hatch, they will typically push the host’s eggs out of the nest.

The parents that inhabit the nest may mob the cuckoo mom, preventing her from dropping ... s an avid wildlife photographer, observed the birds’ behavior in 2014 in Amsterdam, where she lives.

Cuckoos are brood parasites who they lay their eggs in the nests of other bird species, a clever trick that spares the rearing and feeding of their own offspring. Why do other parent birds let ...

The term comes from the cuckoo bird, which lays its eggs in the nests of other birds. See Easter Egg. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction requires permission.

Tree Pipits have evolved remarkably high variation in egg colour and pattern as a defence to brood parasitism by Common Cuckoo ... about 50 nests remained. Loss of nesting sites and food contamination ...