ultrafacts:The one in the picture above is uniform, it is a…

ultrafacts:

The one in the picture above is uniform, it is a first year bird but as time goes by the pigment that occurs naturally in their wings fades, until the bird molts new feathers and they are bright pink again under

UV (black)
light, so by watching the molting patters you can determine the age…here is an example of some different ages.

image

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Source: Ultra Facts
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