A Butterfly's Body 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 The Birds, the Bees, and the Butterflies: Butterfly Mating Behaviors Chicago Botanic Garden Moths Vibrate Their Genitals to Avoid Bats National Geographic The Science Behind Butterfly Vision And Body Temperature : Short Wave : NPR