An intact, fossilized specimen of the world’s largest egg—of any known species ever on Earth—entered the National Geographic ...

A woman in Arizona has no need of a feline farmhand when she has a flock of feathered fiends to keep rats at bay.

Arizona's state bird fends for itself against predators in the desert, making its home in prickly plants. Here's what to know ...

A Mexican migration officer explains to migrants that permission to travel across Mexico to the US-Mexico border was suspended.

Each species has specific rituals to attract mates, and success typically comes from doing what is expected (and doing it ...