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

For the care and feeding of its offspring, the common cuckoo outsources ... and lays one of her own—a behavior known as brood parasitism. Sometimes potential victims revolt.

An extinct lineage of parasitic wasps dating from the mid-Cretaceous period and preserved in amber may have used their Venus ...

The parasitic wasp's abdomen boasts a set of flappy paddles lined with thin bristles, resembling “a small bear trap attached ...

How an ancient Venus flytrap-like wasp used its rear end to kill - The parasitic wasp has been found encased in ...

The Center for Biological Diversity filed a lawsuit today to force the U.S. Fish and Wildlife Service to determine whether Suckley’s cuckoo bumblebees warrant protection under the Endangered Species ...

Brood parasitic birds lay their eggs in the nests of others, sparing themselves the expense of rearing their own young. The resulting coevolutionary arms race includes sophisticated defenses by ...

PORTLAND, Ore.­— The Center for Biological Diversity petitioned for Endangered Species Act protection today for the critically imperiled Suckley’s cuckoo bumblebee, which has declined by more than 90% ...

The parasitic wasp lays its eggs inside the froghopper nymph so that when the baby wasp hatches, it can eat its way out from the inside of the froghopper. To defend itself from such a horrible fate, ...