These optical illusions are why butterflies are so hard to catch

High-speed footage of takeoffs reveal that the butterfly markings mislead the eye, making them harder to catch. 00:45 Butterflies in flight create confusing motion cues that baffle birdsResearch Article: Hancock et al. 14:09 Research HighlightsResearch Article: Menezes and Podos Research Highlight: Huge hoard of metal bars hints at vast Iron Age trade Subscribe to Nature Briefing, an unmissable daily round-up of science news, opinion and analysis free in your inbox every weekday. Hosted on Acast. See acast.com/privacy for more information.