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From: Les Chibana <[[email protected]]>
Subject: Re: [SBB] Hawk identification help
Date: Wed, 24 Nov 2004 17:50:07 -0800
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Phil,

12" in length would be short for a Cooper's Hawk, even a male, which is 
more like 14-16". The tail is blurred, obscuring a good assessment of 
the tip features, but the corners appear rounded and a bit of a white 
terminal tail band is apparent. This looks like a Cooper's mainly from 
the thickness of the legs. Sharp-shinned really do have thin legs, even 
though it's actually the tarsi (fused foot bones), not the shins, that 
we see. Also, the eye looks relatively small in the face, which is good 
for Cooper's.

I'm confused by the purported differences in the breast streaking of 
the immature plumages between our two common accipiters (oh, yes, this 
is an immature). I can't find my Kaufman's Advance Birding to refresh 
my memory at the moment. And Brian Wheeler's new Raptors of Western 
North America seems to indicate that there are light to heavily 
streaked forms of both species.

Next time, try to shoot the picture when the bird's tail is 
stationary... :-)

Les Chibana


On Nov 24, 2004, at 12:23 PM, Philip Terzian wrote:

> I saw this hawk at the Bubb Road (Cupertino) pond this morning at 
> about 9:30 AM.  It was on the shore taking a bath for a while, then 
> flew up into a tall tree on the shoreline. I am not certain what it 
> is, but have tentatively identified it as a COOPER'S HAWK.  I am also 
> wondering if it is an adolescent.  I would estimate that it is about 
> 12" long, beak to tail tip.
>
> http://www.pt-photos.com/cooperhawk_page.htm
>
> Thanks in advance for your help.
>
> Phil Terzian

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