Thanks to Dave Davis for the excellent post about chickadee ID. The Sattler
and Braun paper is great, and adds weight to a considerable amount of
evidence that appearance and song aren't reliable for IDing chickadees in
the hybrid zone (which, in most places, has a fuzzy boundary).
I can't imagine why anyone would be annoyed or provoked by the evidence in
the paper. It just adds to the common, humble wisdom that sometimes you
can't know. Frees you up to worry about other things. If you're looking for
your lifer Black-capped, take a road trip.
Dave Hewitt
Gloucester, VA
