Puffins are donning sexy little sunglasses in the name of science

Popular Science 

Dunning already knew that crested auklets, another kind of seabird with a much crazier look to them, have beaks that fluoresce when placed under UV light. He was a man with a hunch and, as he told Newsweek, also "the kind of guy that people send dead birds to." That's not a vote of confidence in most circles, but in the ornithology world it means you've got a bunch of frozen specimens stashed away for testing such hunches. Sure enough, when he plopped a puffin under the UV light, its beak glowed. We think of things that show up under black light as secret, hidden messages, but that's only because our eyes don't perceive UV light as visible.

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