Many insects, including Cotinis fruit scarabs (fortunately, my last pet Cotinis is absolutely flightless for some reason), fly to the nearest window or lightbulb when indoors and bang their heads against it until they are quite woozy. I've heard vague mentions of butterflies (but saturniids just beat themselves up) and fruit/flower beetles successfully flying around in big cages from Orin McMonigle's books, but I'm not sure how they work. How do butterfly zoos avoid such a problem, and why does