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.

and the brood parasite known as the cuckoo has used evolution to do the same thing. Because cuckoos lay their eggs in the ...

For hosts of brood parasitic birds, the costs of parasitism range from diminished nestling growth rate, due to competition with larger and more competitive parasitic offspring (cowbirds ...

Cuckoo catfish are extraordinarily shy, and their eggs are little bigger than a pinhead. On top of this the parasitism behaviour is highly unpredictable, so seeing, let alone filming it ...

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 ...