New study finds birds of prey use unique air sac to soar to great distancesNew study finds birds of prey use unique air sac to soar to great distances - The Jerusalem Post
jpost.comSubmitted by thejerusalempost6895 in science
Unlike the lungs of mammals, bird lungs do more than just breathe. An air-filled sac within the birds’ lungs is thought to increase the force the birds use to power flight muscles while soaring.