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The striking colors in this peacock feather come from irridescence, not pigments. Photo: <a href="http://www.flickr.com/photos/9422878@N08/7557113322/">Bill Gracey</a>, Creative Commons, some rights reserved
The striking colors in this peacock feather come from irridescence, not pigments. Photo: Bill Gracey, Creative Commons, some rights reserved

Natural Selections: Feathers and irridescence

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Most color in nature is the result of pigments that reflect a particular wavelength of light, but some of nature's brightest offerings are created by physical structures within skin, scales and feathers that scattter and interfere with light.

Martha Foley and Curt Stager talk about one of nature's flashier displays--irridescent bird feathers.

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