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Hummingbirds can see colors that humans do not recognize

Hummingbirds are one of nature’s incredible wonders—they run on a diet fueled mostly by high levels of sugar (and sometimes insects), they’re almost constantly on the move, and now we’ve found out that they can see colors on the spectrum that humans can’t even imagine.

A recent paper published in the Proceedings of the National Academy of Sciences of the United States of America (PNAS) describes the ability of some animals—hummingbirds in particular—to see nonspectral colors. This refers to colors that don’t appear in the spectrum of visible light (you can think of spectral colors as being the ones we can see in a rainbow.)

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