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! How Flashy Wings, UV Light, and Seasons All Play a Role in One Butterfly Species' Mating Rituals Why Can't We Hear the Sound of Butterflies Flapping Their Wings? by Miraculous Medium Butterflies vs Moths: What are the differences? Brandywine Conservancy and Museum of Art