hi:

several years ago it seemed there were lots of crows w/ softball sized
patches of white on the back of the neck where the withers wd be on a horse.

accdg to the literature, white on crows is not all that uncommon.
wikipedia has a decent explanation of leucism which mentions crows.
http://en.wikipedia.org/wiki/Leucism there's an internal link in that
article to a note from an investigator at least then at cornell, kevin
mcgowan, who estimated leucism in crows as this:

American Crows, *Corvus brachyrhynchos*, frequently show problems with
pigment deposition. Approximately 1% of nestlings that I band in New York
show some white in their feathers, and four times that many have spots of
white on their toes, bill, or other part of the body. I find young like
this every year, and the occurrence is about what I would predict based on
seeing abnormal crows in large foraging flocks.

see: http://www.birds.cornell.edu/crows/whitecrows.htm

regards,

t

--
dave templeton
fall city, wa

crazydave65atgmaildaughtcom

"Don't worry about the world coming to an end today; it's already tomorrow
in Australia." Charles Schultz
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