Flying takes a lot of energy and creates an updraft in the air currents around a bird's wingtips. Other birds expend less energy by flying in the "sweet spot."
Flying takes a lot of energy and creates an updraft in the air currents around a bird's wingtips. Other birds expend less energy by flying in the "sweet spot."
General Note
Originally released by Smithsonian Media, 2014.
Streaming video file encoded with permission for digital streaming by Infobase on March 10, 2015.
Content Note
Why Do Geese Fly in a V?: Ask Smithsonian (1:00); .