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Close up macaw feather structural colour

Close up macaw feather structural colour

C029/0037

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Credit

PAUL D STEWART / SCIENCE PHOTO LIBRARY PAUL D STEWART / SCIENCE PHOTO LIBRARY

Caption

Structural colour (non pigment colour) of a blue and yellow macaw feather (Ara ararauna) is created by randomly orientated nanochannels in a spongelike keratin matrix. The reflections are not arranged in the same direction giving them bright but not strongly irridescent colours that do not change with angle.

Release details

Model release not required. Property release not required.

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