Add Yahoo as a preferred source to see more of our stories on Google. A shape-shifting flock of thousands of starlings, called a murmuration, is amazing to see. As many as 750,000 birds join together ...

SYDNEY, Australia — One day in April 2016, Kate Brandis opened a weathered envelope, mailed to her from suburban Sydney. Instead of a letter inside, she found the feathers of an Australian white ibis.

Surveys of several sites, including Nepal’s Chitwan National Park, show that the lesser necklaced laughingthrush may be physically mimicking a larger species, the greater necklaced laughingthrush, for ...