Christian Science MonitorHow did some birds become red? Scientists unravel clues.Christian Science MonitorNew research identified a genetic enzyme in birds that converts yellow pigments from their food into red pigments applied to their bills, feathers, and skin. By Madison Margolin, Correspondent May 22, 2016. Save for later Saved. close. Left: A wildtype
...Here's Why Red Birds Are More Attractive To Potential MatesTech Times
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Two studies find one gene for red beaks and feathersBBC News
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