Frantic parenting demands after eggs hatch curtail male black coucals’ philandering excursions the most, a study finds.

Scientists have found the first known fossil of a bird that died with an unlaid egg inside its body. The egg has been cr...

(University of Massachusetts at Amherst) A persistent question among urban ecology researchers has been the long-term im...

Birds called greater anis that can slip extra eggs into other nests create a natural test of the benefits of honest pare...