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Maplewood Flats... Sharp Shinned or Cooper's hawk ?

Posted: Feb 09 5:23 pm
by bshier
Was busy last Saturday at Maplewood Flats with many folks out to see the Northern Goshawk...but there was plenty of other activity to catch while the Goshawk stayed up high in the tree

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Great Blue Heron snacking down on a Northwestern Salamander
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Someone suggested this was a Sharp-shinned Hawk while at Maplewood Flats - the tailfeathers do set up more "squared" when they are closed (vs rounded for the Cooper's) but the Cooper's are more common in the area I think ?
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American Goldfinch - interesting colours ...
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House Finch -

Re: Maplewood Flats... Sharp Shinned or Cooper's hawk ?

Posted: Feb 09 6:54 pm
by therobwalker
Always a popular debate... I would go with sharp-shinned from initial impression, but I don't have a lot of data to back that up... narrow whitish band at the end of the tail, doesn't look very broad to me... in that pose, the rounded vs square tail is going to be pretty hard to use, and isn't the most reliable in the first place.

Your house finch is a purple finch.

Re: Maplewood Flats... Sharp Shinned or Cooper's hawk ?

Posted: Feb 09 8:12 pm
by zwest
I believe I saw this same bird on the 2nd and eventually decided it was a Cooper’s.

If you go to this page and scroll down a bit to see the juvenile photos:
https://www.audubon.org/news/a-beginner ... nned-hawks

You can see how the throat of the Cooper’s has a stripe in the center surrounded by white, and its chest markings get thinner as they go down. This matches the Maplewood bird.

I noticed that this bird was about the same size as the (smallish NW) crows that were harassing it, which means it fits the profile for either male Cooper’s or female Sharp-shinned.

Also, juvenile sharpies usually have whitish eyebrows which this bird didn’t seem to have.

I’m not 100% sure but that was my thought process. :)

Very nice photos BTW!

Re: Maplewood Flats... Sharp Shinned or Cooper's hawk ?

Posted: Feb 09 9:31 pm
by rawalker
Any other pictures? Especially a profile view of the head? I can convince myself of bother Cooper's and sharp-shinned but was leaning towards Cooper's based on this photo...

Re: Maplewood Flats... Sharp Shinned or Cooper's hawk ?

Posted: Feb 09 10:41 pm
by bshier
Thanks for the assistance... will add one more photo, not sure if this will help .......

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Re: Maplewood Flats... Sharp Shinned or Cooper's hawk ?

Posted: Feb 10 10:25 am
by Rokman
Cooper's, with no doubt.
In the first photo, the belly streaks are narrow, dark, and sharply defined. On Sharpy they would be rusty, broader, and more blurry. On the spread tail, you can see that the outer feathers are shorter than the central ones, = Coop.
In the second (last) photo with tail folded, the overlapping of the graduated tail feathers is conspicuously evident. Slam-dunk for Coop.

Re: Maplewood Flats... Sharp Shinned or Cooper's hawk ?

Posted: Feb 10 10:28 am
by northvanrob
That's the resident Cooper's Hawk immature!

Great shot of the Pacific Great Blue Heron with the Northwestern Salamander!

Was that at the West Pond?

The American Goldfinch are getting their breeding colours back slowly!

I was at Maplewood Flats yesterday, but couldn't find the Northern Goshawk!

Re: Maplewood Flats... Sharp Shinned or Cooper's hawk ?

Posted: Feb 10 2:25 pm
by bshier
Thanks for all your help... i am concluding from all fronts that it is the Cooper's !! Went to Piper's Spit this morning more to see how much ice was in play.... there was plenty... forgot my gloves so did not last long...GBH was tucked in tight to shore at the West Pond, very close to a viewing area...

Re: Maplewood Flats... Sharp Shinned or Cooper's hawk ?

Posted: Feb 11 9:50 am
by northvanrob
Hi bshier,

May I have a copy of your Great Blue Heron snacking down on a Northwestern Salamander photo?

I am working on a study of Amphibians at Maplewood Conservation Area and you have a great shot!

Chloe Hartley is the one that did an underwater survey of amphibian eggs and I am sure she would love to see your photo!

Thanks,

Rob Alexander

Re: Maplewood Flats... Sharp Shinned or Cooper's hawk ?

Posted: Feb 11 8:05 pm
by bshier
happy to send it along, message me w your email address and I will send your way

Blair

Re: Maplewood Flats... Sharp Shinned or Cooper's hawk ?

Posted: Feb 12 9:57 am
by northvanrob
Thanks Blair, email is northvanbirder@shaw.ca

Re: Maplewood Flats... Sharp Shinned or Cooper's hawk ?

Posted: Feb 16 8:07 pm
by therobwalker
2nd photo is no doubt in my mind now either!