SUMMARY
New research utilizing slow-motion cameras capturing butterflies at over 1,000 frames per second suggests that wing patterns function as optical illusions to help butterflies avoid predators. Scientists observed butterfly takeoffs and analyzed the footage with a bird-vision computer model, revealing that wing patterns can create illusions of movement that confuse attackers. This phenomenon is compared to the barber pole illusion, where stripes appear to move in a different direction than they actually are. The study examined seven different patterns across five species and found similar illusion-creating patterns in approximately 400 European butterflies, potentially explaining the bright colors on the upper side of their wings.
TAKEAWAYS
Slow-motion cameras filming butterflies at over 1,000 fps were used in new research.
Butterfly wing patterns may create optical illusions to confuse predators like birds.
The illusion is similar to the barber pole effect, making predators miss their target.
This research could explain the bright colors on the upper side of butterfly wings.