Vibrating Thorax Sets Flies' Wings A flutter Biological Strategy AskNature How thin, delicate butterfly wings keep from overheating Physical and behavioral adaptations to prevent overheating of the living wings of butterflies Nature Communications Why are his wings vibrating ? Is it damaged ??? 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!