this is a recent unexpected discovery by a researcher on Twitter. Although there is no further conclusion, it looks like an interesting feeling.

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some time ago, ornithologist Jamie Dunning inadvertently illuminated an Arctic puffin with an ultraviolet lamp (this is only a remains, not alive). As a result, he saw something unexpected: the beak of the big-billed seabird showed a bright blue fluorescent band.

fluorescence is not uncommon in the biological world, and many natural compounds in organisms show fluorescence under UV excitation. However, the fluorescent pattern on the beak of the sea parrot aroused the interest of the ornithologist. Birds have cones that are different from humans. They can sense light in the ultraviolet band. So, will these patterns stand out in their eyes? Will this be a signal of communication between individual birds?

of course, in order to test these conjectures, it is first necessary to detect the fluorescence of the beak in living Arctic puffins. In order to do some research without damaging the birds' eyes, Dunning first designed "sunglasses" for the sea puffin:

(I'm afraid this shape needs to be improved. )

so far we know very little about what this new discovery means, and Dunning says he and his colleagues will publish a paper and do more research, which seems to be something to look forward to.

related report: http://www.cbc.ca/news/canada/newfoundland-labrador/puffin-beaks-flouresce-1.4607386