V-flying birds pick efficient flapping pattern | Science News

ADVERTISEMENT

SUPPORT SCIENCE NEWS

Science News is a nonprofit.

Help us keep you informed.


News

V-flying birds pick efficient flapping pattern

Timing is everything to catch a boost from a neighbor’s wing

By
1:37pm, January 15, 2014

FLYING FORMATION  Northern bald ibises from a captive breeding program offered flight researchers a chance to test the bird’s flapping strategies during migration.

View the video

A bird migrating with others in a V formation turns out to be a master of the well-timed flap, able to match the up-and-down path traced by the wing tip of the bird in front of it. 

Fighter pilots know the benefits of flying in a V formation. Wings create a vortex of whooshing air trailing from their tips, and a rearward plane that keeps one of its wing tips in a vortex from the plane in front gets a boost from the upwash of air and can save fuel. But birds flap their wings, and the vortices spinning off their rising and falling wing tips swoop up and down. For a bird to catch the benefit of another’s wing trail, flap timing has to be right.

Sensitive monitoring devices show that northern bald ibises coordinate their wing beats in the ways that scientists predicted would be efficient, says Steven Portugal of the University of London’s Royal Veterinary College in Hatfield. When flying in a V formation, a bird

This article is only available to Science News subscribers. Already a subscriber? Log in now. Or subscribe today for full access.

Get Science News headlines by e-mail.

More from the Science News Archives

From the Nature Index Paid Content