Odd Junco

Among the aberrations we see in birds' plumages, albinism or leucism is perhaps one of the more interesting, or at least eyecatching. Recently some friends sent me these photos of what appears to be a Junco with a lot of white in its wing, rump and tail feathers, and a very unusual appearance of its normally dark-hooded head. It's almost odd enough to raise some doubt about it even being a Junco.