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A hummingbird feeds on a butterfly bush in Washington state on Aug. 18, 2017. Jim Culp / Flickr Hummingbirds live a more colorful existence than humans do, a new study published in the Proceedings of the National Academy of Sciences Monday confirmed . While humans only have three color cones, birds have four, meaning they can theoretically see colors on the ultraviolet spectrum, National Geographic explained. Until now, however, no scientist had really tried to discover what a bird’s eye view of color would look like. "Humans are color-blind compared to birds and many other animals," lead study author and Princeton University assistant professor Mary Caswell Stoddard said in a Princeton press release . "Not only does having a fourth color cone type extend the range of bird-visible colors into the UV, it potentially allows birds to perceive combination colors like ultraviolet+green and ultraviolet+red — but this has been hard to test." To overcome these difficulties, Stoddard and a team of scientists from Princeton, the University of British Columbia (UBC), Harvard University, University of Maryland and the Rocky Mountain Biological Laboratory (RMBL) set up a series of outdoor experiments with broad-tailed hummingbirds in Colorado. They wanted to test the […]

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