Bob and Tweeters,

I thought the crow examiners at the UW were focused on behavior.

I would think its going to take DNA samples rather than a yard stick
to nail this one down.

Larry Schwitters
Issaquah


On Dec 22, 2009, at 9:00 PM, Bob Norton wrote:

> The people who examine crows at the University of Washington say
> there are no Northwestern Crows in Washington. They have not been
> able to find any Crows in Washington with the correct measurements.
> North of the Frasier River in British Columbia they are all
> Northwesterns except for one area in Alaska where the American Crows
> get to the salt water.
> If anyone else knows otherwise, please expound and quote your
> sources.
> Bob Norton
> norton36 at olypen.com
> Joyce (near Port Angeles), WA
> ----- Original Message -----
> From: Jon Leland
> To: tweeters at u.washington.edu
> Sent: Monday, December 21, 2009 1:04 PM
> Subject: [Tweeters] NW vs AM Crow
>
> Hi all:
>
> For those you listers, I am curious how you handle ID and tracking
> for American vs Northwestern Crow. The resources I have consulted
> suggest that it is impossible to tell the difference other than
> range. Do you just count it as NW Crow when youre on the Pacific
> Coast and AM crow the rest of the time? I use eBird to track my
> sightings, and am a little amused that they even offer "American/NW
> Crow hybrid" as a common species.
>
> Regards
> Jon Leland
> Seattle WA



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