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! All About Butterflies Cambridge Butterfly Conservatory 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 Guys it's been 5 mins and this butterfly is not flying from my hand, she is alive but she is not moving anywhere : r Butterflies