How Butterflies Work HowStuffWorks Butterflies Taste With Their Feet! NWF Ranger Rick Ever notice a monarch butterfly vibrating its wings? This isn't just random behaviorit's a survival strategy called Shivering. Especially when temperatures drop, monarchs vibrate their wings to generate heat and warm Why do moths vibrate their wings? Did you know Monarch butterflies shiver their wings to stay warm? When temperatures drop, these delicate pollinators vibrate their wings rapidly in a behavior called shivering. This tiny motion generates heat, helping Can a Butterfly in Brazil Really Cause a Tornado in Texas? Live Science