Andean condor can fly for 100 miles without flapping wings

World's largest soaring bird flaps wings only 1% of time in flight, study shows

A study sheds light on just how efficiently the world's largest soaring bird rides air currents to stay aloft for hours without flapping its wings.

The Andean condor has a 3-metre (10ft) wingspan and weighs up to 15kg (33lbs), making it the world's heaviest soaring bird.