It's a question visitors ask staff all the time at the Smithsonian's National Zoo's Bird House. The answer may surprise you!

Piping plover parents have their work cut out for them with these precocious chicks. Ready to roam the beach just hours after ...

Researchers from the UK and China have found that living birds have a more crouched leg posture than their ancestors, who are generally thought to have moved with straighter limbs similar to those of ...