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Butterflies use optical illusions to dodge predators

A bird attacking a butterfly will often find its beak snapping at thin air. According to new research, that split-second miss isn't just bad luck. It's caused by a visual illusion from the butterfly's wings.

Butterflies use optical illusions to dodge predators

We haven't written up this one. Phys.org has the full story — the link below goes straight to it.

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