Butterfly Wing Patterns May Trick Predators with Motion Illusions
When a bird lunges at a butterfly in mid-flight, it may see something that is not there — the insect’s wings flashing beneath may not be moving where they appear to be moving. By the time the predator realizes the illusion, the butterfly already may have escaped.
We haven't written up this one. The Japan News by The Yomiuri Shimbun has the full story — the link below goes straight to it.