Love is in the air: how butterflies date Natural History Museum What causes shaking in monarch butterflies? 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 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!