Seismology meets botany: Geologist applies vibration science to saguaros 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 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! The moment she takes off and starts flying around their house @skylerstelz shared that despite butterflies having a very short lifespan, she was determined to see this butterfly fly again! Love is in the air: how butterflies date Natural History Museum All About Butterflies Cambridge Butterfly Conservatory