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IPFS News Link • Science

Photos Reveal Purpose of Black Facial Markings in Peregrine Falcons

• arclein

Many animals have black markings under the eye that are said to reduce the amount of glare entering the animal's eye, improving their ability to see especially in bright conditions. Athletes also subscribe to this idea, often placing black grease or strips under their eyes to reduce glare from the sun or stadium lights. Until recently this idea, termed the solar radiation hypothesis, went untested.