Why are his wings vibrating ? Is it damaged ??? : r moths Love is in the air: how butterflies date Natural History Museum Love is in the air: how butterflies date Natural History Museum Ever notice a monarch butterfly vibrating its wings? This isnt just random behaviorits a survival strategy called Shivering. Especially when temperatures drop, monarchs vibrate their wings to moths do not shiver because they are frightened, but because they have muscles that need to be warmed up before flight. the shivering helps to regulate their temperature and ensures their wing