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UV Imaging
Visible Image 

  Since humans cannot see ultraviolet light, we use UV imaging to see how UV light is reflected from the feathers of waterfowl.  The specimens are illuminated with a UV lamp and are imaged with a digital camera equiped with lens filters that block all visible light.  The camera converts the UV light it recieves into visible light to produce a monochromatic image.  The feathers that reflect UV light show up as white areas in the UV image.  All UV absorbing areas appear dark in the UV image.

Ultraviolet Image
So my decoys look black to a duck or goose?  No, birds see both UV and visible light. Missing the UV component of the reflection means that the color will be different, but it will not be black. 
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