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Project Noah Nature School
Passer domesticus
A female House Sparrow showing Piebald coloring, white around neck, and small patches on head and right wing.
Spotted on Dec 28, 2011
Submitted on Dec 28, 2011
3 Comments
More common than a complete absence of pigment cells is localized or incomplete hypopigmentation, resulting in irregular patches of white on an animal that otherwise has normal colouring and patterning. This partial leucism is known as a "pied" or "piebald" effect. Mine is Piebald, a form of Leucism.
This bird is leucistic, hence the odd white markings.
http://en.wikipedia.org/wiki/Leucism
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