To find food, dazzle mates, escape predators and navigate diverse terrain, birds rely on their excellent color vision. “Humans are color-blind compared to birds and many other animals,” said Mary ...

Feral hogs with "slushie-blue" innards turned up in Monterey earlier this year—and not for the first time. A young wild boar stands at Joseph D. Grant County Park in Santa Clara County, California.

Captive breeding to bolster wild populations of endangered species changes the bodies, behavior and health of captive-bred animals, thereby decreasing their chances of survival after they’re released ...