A bird track shows claws and all four toes, including the rear toe, or hallux. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert!

Claw trimming is an important and regular maintenance measure for owners of ornamental birds such as budgies or parrots. However, there are a few points to bear in mind. Dr. Ursula von Einem from ...

From climbing trees to ripping prey, from scuttling up tree trunks to using feet as hands, evolutionary engineering is at work in Nature ...

So far, the oldest-known bird fossil is the famous Archaeopteryx ... This odd, crow-sized creature had long legs and three toes tipped with claws; its jawbone and teeth were like those of a ...