When the cuckoo chick hatches, it ejects other eggs or hatchlings to get all the space—and food—for itself. Hungry as a whole brood, the outsize baby devours everything brought by its foster ...

Turns out the cuckoo is a brood parasite. It lay eggs in the nests of other birds, leaving them to deal with the surprise offspring. Knowing this rather nasty bit of business makes Harry Lime’s ...

Cuckoo catfish trick cichlids into caring for their eggs in a strategy known as brood parasitism. Amid cuts to federal funding, US universities tighten budgets, forcing PhD students and early-career ...

An extinct species of parasitic wasp dating back nearly 99 million years was found preserved in amber, according to ...

The eggs of many brood parasites, for example, mimic those of their hosts (to deceive hosts to accept), have harder shells (to impede rejection by puncture), and require slightly shorter ...

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 ...

“Protecting these parasitic bees may seem strange, but parasites play an irreplaceable role in keeping other bee populations healthy,” said Jess Tyler, a staff scientist at the Center and a petition ...

The nearly inch-long, black-and-yellow bee is unusual in that it is a “cuckoo” or social parasite that takes over the nests of other bumblebees by subduing the resident queen and making the worker ...