Fantastic facts about butterflies: Everything you need to know, according to science BBC Science Focus Magazine Love is in the air: how butterflies date Natural History Museum 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 Butterfly Facts Ten Fabulous Facts About Butterflies: A Wildlife Garden's Best Friend The National Wildlife Federation Blog