I've gotten several emails regarding the American Crow with the white wing
patches, and appreciate all the discussion.
I don't think that the white markings on the crow is a result of common
leucism, where some feathers (or all of one pigment) are randomly white. The
pattern on both wings seem to be about the same. I think that it might be a
generic variance. Sibley doesn't show leucistic birds in his field guide,
but does show the crows with white wing patches as a variation.
I've seen a few birds that were completely missing dark pigment, but were
not albinos. Here are links to a couple of my photos:
Carolina Chickadee:
<http://www.faintich.net/Wildlife/NAmerica/Chickadees/Carolina_Chickadee_FA0
19317.jpg>
http://www.faintich.net/Wildlife/NAmerica/Chickadees/Carolina_Chickadee_FA01
9317.jpg
Northern Cardinal:
<http://www.faintich.net/Wildlife/NAmerica/Cardinals/Leucistic_Cardinal_FA17
4903.jpg>
http://www.faintich.net/Wildlife/NAmerica/Cardinals/Leucistic_Cardinal_FA174
903.jpg
______________________________________
Marshall Faintich
Crozet, VA
marshall@xxxxxxxxxxxx
www.faintich.net <http://www.faintich.net/>
In real life, the shortest distance between two points is never a straight
line, so you might as well enjoy the journey !!
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