The Andean condor is the world's heaviest soaring bird and can weigh up to 15kg The world's heaviest soaring bird flaps its wings just 1% ... They wanted to find out more about how birds' flight ...

These condors are mostly black, but males have a distinctive white “collar” around their necks and some white markings on their wings as well ... a full year. The Andean condor is considered ...

Adult female soaring in central Chile with broad wings, some of the largest of any bird. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert!