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! BUTTERFLY Mini Diamond Cutting Disc 45 mm Shank 3mm Wet Use Distar amastone Pibbs PS85 V Milan Pedicure Spa w Vibrating Chair Buy Rite Beauty Q: Why are my butterfly's wings shaking? ANSWER: All insects are coldblooded unlike birds and mammals that maintain a constant high temperature. A butterfly vibrates its wings to increase the metabolic