Hi,

If we were to apply the standard of relative size to Homo sapiens we
would have a hundred species of humans to contend with!

Gene Hunn.

On Wed, 2 Mar 94 Greg Gillson <gregg at tdd.hbo.nec.com> wrote:
> To: Tweeters and Oregon Birders On-line
> >
> > Once the NW Crow was isolated from the American, but we are now
> > seeing a mixing of genes between the populations with perhaps a rather
> > broad cline now in place. Populations showing intergradation of the NW Crow
> > may well extent south to northern Caifornia.
> >
> > What do the Oregon birders think?
> >
> > From: Jerry Tangren, Wenatchee WA
> > <gsw$en at wsuvm1.csc.wsu.edu>
>
> I can't speak for all Oregon birders, but most feel that Northwestern Crow
> does not exist as a separate species. The above paragraph sounds reasonable.
> For the same reason (probably) the demise of Thayer's/Kumlien's/Iceland Gull.
> We'll probably be having this discussion about Western/Glaucous-winged Gull
> in 30 years.
>
> In the 1970s the term "Yachats Crow" (pronounced: ya-hots) was coined for
> the Brewer's Blackbird-sized crows of the central Oregon coast, near the
> town of Yachats in Lincoln County. Perhaps this was most noticeable, because
> the birds just inland, in Eugene, are larger than many crows northward toward
> Portland. This doesn't seem to be a trend from small birds north to larger
> birds south; rather there are "pockets" of smaller birds on the central
> Oregon coast, and, I understand, also in northern California as well.
>
> I think that live-trapping of crows on Northwestern beaches and coastal areas
> from southern Alaska to northern California would be a worthwhile project.
> While you're (not me!) at it, you might do the same for Western/Glaucous-
> winged Gulls. They are both scavengers, sharing the same range and habitat,
> and apparently combining previously separated forms.
>
> -greg-
>
> --
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