Date: 2/8/18 6:29 pm
From: J. Acker <owler...>
Subject: RE: [Tweeters] Need Raptor ID Help
This is a juvenile Cooper’s Hawk for the following:



The rectrices get shorter the further out from centerline – hence the rounded tail appearance of a Cooper’s Hawk (Vs. Sharp-shinned).

The terminal band in the photo is the same width as other dark bands. In a juvie Broad-winged, the terminal dark band is noticeably wider and darker than other bands.

The tear-drop shaped markings on the breast are indicative of a Cooper’s hawk (vs. sharp-shinned). Those on a Broad-winged are larger and less dense.

A Goshawk would have irregular tail bands, while these are very regular.



J. Acker

<mailto:<owler...> <owler...>

Bainbridge Island, WA



From: <tweeters-bounces...> [mailto:<tweeters-bounces...>] On Behalf Of Joe Mackie
Sent: Thursday, February 08, 2018 5:58 PM
To: 'Alexandra MacKenzie' <mizmak...>; 'tweeters' <tweeters...>
Subject: RE: [Tweeters] Need Raptor ID Help





This is one of the most interesting raptor ID challenges I’ve seen in a long time. BWHA seems far-fetched (I’ve never seen one perched up). Accipiter seems more likely. Goshawk? Whatever, it’s a juvenile. Hmmm….this is fun. Can’t wait to hear from Bud.



Joe Mackie

Bellingham

From: <tweeters-bounces...> <mailto:<tweeters-bounces...> [mailto:<tweeters-bounces...>] On Behalf Of Alexandra MacKenzie
Sent: Thursday, February 8, 2018 3:37 PM
To: tweeters <tweeters...> <mailto:<tweeters...> >
Subject: Re: [Tweeters] Need Raptor ID Help



UPDATE: Between Tweeter comments (some made privately) and Flickr comments, I have about half Broad-winged Hawk IDs and half Cooper's Hawk IDs, but a Flickr commenter just suggested immature Northern Goshawk, which looks good, too! Awaiting final determination from Bud Anderson. Thanks for all the input, everybody--hawks are hard!

Alex





On Thu, Feb 8, 2018 at 2:30 PM, Stewart Wechsler <ecostewart...> <mailto:<ecostewart...> > wrote:

Alex,



I would agree with your first assessment, that it is indeed a Cooper's Hawk. Look at how narrow the final black band is on the tail, and compare it to photos on the internet of Broad-winged Hawks, with broader final black bands, and may be fewer black bands. That said, I am not certain it isn't a Sharp-shinned Hawk. It would be helpful to get an idea of the size, crow-sized for a Cooper's , big jay sized for a Sharp-shinned, but the tail on your photo shows the better rounding at the end, that is more a feature of the Cooper's Hawk, while the Sharp-shinned is a bit more squarred at the end, at times with a better defined notch in the center. Also, we don't get many Broad-winged Hawks in our area, which is partly why I always want to know where a photo was taken, ideally with some habitat information..



-Stewart Wechsler

www.stewardshipadventures.com <http://www.stewardshipadventures.com>



Message: 7
Date: Thu, 8 Feb 2018 08:09:22 -0800
From: Alexandra MacKenzie <mizmak...> <mailto:<mizmak...> >
Subject: [Tweeters] Need Raptor ID Help
To: tweeters <tweeters...> <mailto:<tweeters...> >
Message-ID:
<CAJfxVzeonira691GkK7rSqyNFPh57ecAP1ufyUOhXxn2k0mGaA...> <mailto:<CAJfxVzeonira691GkK7rSqyNFPh57ecAP1ufyUOhXxn2k0mGaA...> >
Content-Type: text/plain; charset="utf-8"

In Sep 2014 I took a photo of a hawk at Magnuson Park in Seattle and posted
it on Flickr as a Cooper's Hawk. Recently a birder commented that he
thought it was a Broad-winged Hawk. I thought that unlikely but am now
confused by his field mark comments. The photo and comments may be found
here:
https://www.flickr.com/photos/mizmak/15199769280/

If the experts can weigh in, I'd greatly appreciate it.

Thank you,
Alex MacKenzie
Seattle
<mizmak...> <mailto:<mizmak...>




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