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 ...

A newly identified parasitic wasp, compared to an “alien” predator, was found entirely by chance. Its ability to infect adult ...

The public has been advised not to leave pet hair out for nest-building birds in case they come into contact with chemicals ...

Once a bird feeds on the snail that is infected, the parasite completes its cycle by moving into the bird's digestive system. It grows and matures in the bird, producing eggs that are excreted ...

Snowy owl in Wisconsin died due to emaciation and intestinal parasites, not avian influenza, per DNR necropsy.