Butterfly wing patterns may trick predators with motion illusions ↧

Butterfly wing patterns may trick predators with motion illusions ↧ ↧ 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.