Butterfly Wings Exploit Human Vision Flaws to Evade Predators
A new study in Nature reveals that butterfly wing patterns function as 'motion dazzle,' exploiting visual processing biases to confuse predators. By combining specific stripe patterns with flight dynamics, butterflies create illusions similar to a spinning barber pole, making it difficult for birds to accurately gauge speed and direction. This mechanism explains why brightly colored butterflies survive despite lacking traditional camouflage, as the illusions disrupt the final milliseconds of a predator's attack.
