Robert Clarkのインスタグラム(robertclarkphoto) - 4月30日 10時10分

This one is a puzzle to me, in all the pictures that I took of feathers, I don’t seem to know what kind of bird this is. Any amateur #ornithologists out there with an idea?

The iridescent green along the leading edge of this secondary feather is an example of #structuralcolor, in which the internal structure of the feather is what give is the hue seen by the eye. This kind of coloration is not exclusive to birds, but is one of two major ways that the natural world displays color: the color is either inherent in the object, or emerges from the refraction of light through the object.

@ナショナルジオグラフィック @Robert Clark @thephotosociety @instituteartist

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