white upper breast on raven at Stowe Lake, Tuesday May 7

David Couch

My niece sent me a photo she took of what is apparently a Common Raven but with a bright white patch in the center of it's upper breast beneath the throat. I don't think I can attach a photo here, but you can see it at 

I know (thanks, Sibley!) that ravens have gray roots to their neck feathers, but this appears to be on a different area and is, in any case, quite white not gray.

Any explanation, anyone?
-David Herzstein Couch, Berkeley

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