A White-necked Jacobin chick may use mimicry or camouflage to avoid predators, resembling a caterpillar with fluffy feathers.

If you've got a manual on USB ports or have watched any kind of video, you may have heard them referred to as Male or Female ...

These body type classifications have their roots in discredited pseudoscience—but they're still common shorthand at the gym.

Imagine a world where mothers don’t need fathers to create life—a world where females alone carry the spark of the next ...

The male European fiddler crab attracts his mate by performing a courtship dance. New research published in the Journal of ...

In birds, singing behaviors play a critical role in mating and territory defense. Although birdsong can signal individual quality and personality, very few studies have explored the relationship ...