Why Can't We Hear the Sound of Butterflies Flapping Their Wings? by Miraculous Medium How Butterflies Work HowStuffWorks 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 Monarch Butterfly Garden Facebook How Flashy Wings, UV Light, and Seasons All Play a Role in One Butterfly Species' Mating Rituals