Understanding Why Guinea Pigs Vibrate 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 Understanding Vibration Plates and Nervous System Health 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 What causes shaking in monarch butterflies?