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Cooper's Hawk or Sharp-Shinned?


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#1 Rogue Birder

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Posted 07 February 2013 - 03:35 PM

At Spring Grove Cemetery in Cincinnati 02/04 - I'm seeing Sharp-Shinned, but I figure it will be another Cooper's...

A little help?





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#2 Peeplvr

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Posted 07 February 2013 - 03:42 PM

Cooper's, I like the big head and long-tailed look. I think you can see a pale nape in one photo.

#3 psweet

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Posted 07 February 2013 - 04:06 PM

Cooper's seconded.

#4 Rogue Birder

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Posted 07 February 2013 - 04:55 PM

Drats!!

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#5 cany

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Posted 07 February 2013 - 05:02 PM

Cooper's seconded.


PSweet, what in those photos do you see to pos ID the Cooper's? It was my guess too, but just a guess.

I eliminated RT and RS and came to Cooper's or Sharpie due to tail length, and while the hawk does look greyish back and head, that's as far as I got with those last two things uncertain. Trying to learn:)

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#6 psweet

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Posted 07 February 2013 - 05:04 PM

I was going mostly on what I could see of the face pattern.

#7 cany

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Posted 07 February 2013 - 05:39 PM

I was going mostly on what I could see of the face pattern.


Thanks:)

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#8 cany

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Posted 07 February 2013 - 05:42 PM

Cooper's, I like the big head and long-tailed look. I think you can see a pale nape in one photo.


It seems like the tail is almost as long as the body:) The shape is something different for me than the hawks I usually see. The sharpies and coops are harder for me.

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#9 Guest_Birdluvr_*

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Posted 07 February 2013 - 05:57 PM

wow, i see pale nape in top picture and very thin legs in the second.. is this the same bird?

#10 Rogue Birder

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Posted 07 February 2013 - 06:17 PM

The legs are what made me think sharp. The bird standing on the ground was taken first (through snowy windshield. I watched it fly to a tree and then drove as close to the tree as I could for the second photo.

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#11 TheBillyPilgrim

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Posted 07 February 2013 - 06:35 PM

I'd be careful using that thin leg character from a single photo. These guys have laterally compressed tarsi and both species can look very thin, depending on the angle. Additionally, it's a rather relative/subjective character if you don't have another bird to compare it against. I agree with Cooper's Hawk for this bird.

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#12 Guest_Birdluvr_*

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Posted 07 February 2013 - 06:36 PM

im not sure what lateral compressed tarsi is..but the nape screams coopers, legs say sharpie. i guess its the angle of the photo.

#13 Guest_Birdluvr_*

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Posted 07 February 2013 - 06:40 PM

i just googled. i came up with stuff i have no idea what they are talking about...lol

#14 psweet

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Posted 07 February 2013 - 06:40 PM

Tarsi refer to the lower part of a bird's leg (which is actually analogous to the long bones in our feet). Laterally compressed means that they are thinner from left to right than they are front to back. In a photo like this, I would also be careful using that feature because it's common for a white background to bleed around a thin object like a bird's leg, which will make it look thinner.

#15 Guest_Birdluvr_*

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Posted 07 February 2013 - 06:43 PM

oh ok, ty psweet. you explained it very well :). yes, pale nape makes it a coopers.

#16 ololaiki

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Posted 07 February 2013 - 06:55 PM

Tarsi refer to the lower part of a bird's leg (which is actually analogous to the long bones in our feet). Laterally compressed means that they are thinner from left to right than they are front to back. In a photo like this, I would also be careful using that feature because it's common for a white background to bleed around a thin object like a bird's leg, which will make it look thinner.


Wow! Short paragraph and so much information. Thank you psweet!

#17 cany

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Posted 07 February 2013 - 07:24 PM

Tarsi refer to the lower part of a bird's leg (which is actually analogous to the long bones in our feet). Laterally compressed means that they are thinner from left to right than they are front to back. In a photo like this, I would also be careful using that feature because it's common for a white background to bleed around a thin object like a bird's leg, which will make it look thinner.


Thank heavens I took a year of zoology years ago:) I still remember a lot of it and while it's different in birds than mammals, a lot is similar. It really helps.

Life list: 349
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To go: 32

 

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#18 Guest_Birdluvr_*

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Posted 07 February 2013 - 07:45 PM

my dad taught zoology, psysiology and anatomy for years in college. i should know more about that kind of stuff but i dont.lol

#19 cany

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Posted 07 February 2013 - 07:54 PM

my dad taught zoology, psysiology and anatomy for years in college. i should know more about that kind of stuff but i dont.lol


Who knows! If it was local, maybe I took classes from him:)

Life list: 349
Most recent lifers: Gull-billed Tern, Palm Warbler, Lesser Nighthawk, Dusky-capped Flycatcher, Little Gull, Glaucous Gull, Thayer's Gull, Ancient Murrelet, Winter Wren 

 
This year's goal: Get life list to 375, see 315 different birds this year. 
 
Seen/heard: 283
To go: 32

 

My wee blog: http://thisskysings.wordpress.com/

 


#20 Guest_Birdluvr_*

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Posted 07 February 2013 - 10:01 PM

could be.. it was back in the late 70's, early 80's. he taught from 1949-the 80s, then retired. he was the chairman of the Life Science Dept at Los Angeles City College. i went there also back then :)




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