Birds see a more colorful world than we do, especially when it comes to their eggs, a new study suggests. Unlike humans, birds can see ultraviolet (UV) light, and they have four rather than three ...
Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Hummingbirds can see an impressive array of colors that are ...
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Birds-of-paradise are sending secret color signals invisible to human eyes, scientists say
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