Researchers find that for some birds, it keeps predators at bay ... placed two quail eggs inside more than 60 nest boxes and 80 inactive American robin nests placed around the Monkey Run Natural ...

"We think that an evolutionary history of harmful interactions between small-bodied predators ... nest boxes—to simulate cavity nests—and the remaining 80 were inactive open-cup American robin ...

For some birds, it keeps predators at bay ... researchers placed two quail eggs inside more than 60 nest boxes and 80 inactive American robin nests placed around the Monkey Run Natural Area ...

One defense strategy that birds might employ involves draping their nests with snake skin. This tactic helps keep predators away, […] ...