Beating the Heat in the Living Wings of Butterflies BNL Newsroom Fantastic facts about butterflies: Everything you need to know, according to science BBC Science Focus Magazine Butterfly Wing Structure and Function BUG UNDER GLASS Why do monarch butterflies shiver? They do this to increase their body temperature by warming their muscles so they can take flight., Photo Courtesy of Community Member Julie Bthanks Julie! Butterflies: Scientists explain how they fly! BBC Newsround