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March 2018

A Trick of the Light . . .

Anna's Hummingbirds sparkle with iridescence... with their emerald green back and hot pink throats — known as gorgets. But wait! Catch them in a certain light, and the sparkle goes away, or entirely new and vibrant colors appear. The microscopic structure of the feather barbules — not pigments —... read more »

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Topics & Themes:  plumage
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