Dark feathers give birds hot wings that may save energy during flight

Birds with dark wing feathers may fly more efficiently because of the way the wings heat up in sunlight and change the way air flows over the wing

from New Scientist - Home https://www.newscientist.com/article/2210970-dark-feathers-give-birds-hot-wings-that-may-save-energy-during-flight/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home
via Local Aerial and Satellite Installers Wigan