black squirrels

[weissm at rockvax.rockefeller.edu]

In article <3JAN199509522405 at seqvax.caltech.edu>,
mathog at seqvax.caltech.edu (David Mathog) wrote:

  Even in urban Brooklyn ( New York) there are a few (the same one?) black
squirrels tha forage in the back yards.  They appear by appearance and
behavior indestinguishable (except for color) from the more frequent grey
squirrel.  It ssems from these postings that black squirrels occur where
ever there are grey squirrels.  Cause and effect?

Cheers,

Martin Weiss
weissm at rockvax.rockefeller.edu