Subject: Re: Northwestern Crows (was Species Concepts)
Date: Jun 30 15:40:33 1995
From: James Ha - jcha at u.washington.edu


Dennis,

On Fri, 30 Jun 1995, Dennis Paulson wrote:

[abstract deleted]

> Jim, this sounds as if there is a bimodality in crow call types in this
> area and nothing inbetween. Did I interpret your abstract correctly? If
> so, this is evidence clearly in contradiction of what Gene and I wrote.
> However, you mentioned "genetic hybridization in calls," which sounds as if
> there might have been intermediates. Or did you just mean one crow giving
> 2 call types?

Nope, basically calls from "Seattle" and Nanaimo are statistically
distinguishable, and calls from Sequim and San Juan Island are
intermediate- I've got a great cluster figure... I'll see if I can create
an ascii version... of course, I'll bring it along when we come for a
visit (some time soon!).

> Of course, according to tradition (i.e., Jewett et al., Birds of Washington
> State), Seattle crows are supposed to be both _caurinus_ (at and near the
> coast) and _brachyrhynchos_ (away from it). Where was your roost?

University of Washington campus, outside the Burke Museum. What do you
think?

Cheers,
Jim