Screengrab of a mallard duck incubating her eggs in an unoccupied bald eagle's nest on Friday.

The mallard duck had to spend a night in his rescuer’s bathtub before she could take it in to rehabilitators, a Virginia wildlife center said. Screengrab from the Wildlife Center of Virginia's ...

What if you could tell a potential partner’s STD status just by looking at them? That’s the evolutionary advantage that ducks appear to have. It turns out mallard ducks have a problem with the males ...