Hummingbird’s Feathers Are Iridescent.
This bird is gorgeous.
Structural Colors
Adding to the diversity of avian colors are colors produced by the structure of the feather. The best known example is the gorget (throat feathers) of many hummingbird species. The iridescent colors of the gorget are the result of the refraction of incident light caused by the microscopic structure of the feathers. The refraction works like a prism, splitting the light into rich, component colors. At certain angles little or no light is reflected back to the viewer and the gorget can appear black. As the viewing angle changes, the refracted light becomes visible in a glowing, shimmering iridescent display.
Basic Facts About Hummingbirds
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