Subject: crossbills
Date: Jan 5 12:21:15 1995
From: "Barbara A Holland" - HOLLAND at po.pdx.edu


See the New York Times (the only REAL newspaper available to
Northwest residents), January 3, for an extensive article on the
multiple subspecies of red crossbills. A graphic display shows how
birds sounds differ by bill type no matter where they were recorded.
Interesting discussion on whether diversity is required by seed
types. But if that is true then why are different bill types found
in the same areas? Do different bill types mix in common flocks?