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vpr Saturday 11th November 2017 02:02

Hawk, Southern Vancouver Island
 
2 Attachment(s)
Juvenile hawk on southern Vancouver Island.

Not sure if it is a sharp-shinned hawk or a Cooper's or something else.

I picked two photos that together show the shape, tail-feathers and under-wings.

It's quite small, about the size of a merlin (which I thought it was at first).

KC Foggin Saturday 11th November 2017 02:10

Looking at its legs, I'm going with Sharpie.

njlarsen Saturday 11th November 2017 02:30

sharpie for me as well.

Niels

AidenD Saturday 11th November 2017 02:32

One more for Sharp-Shinned.

vpr Saturday 11th November 2017 02:33

Thanks a lot for the quick replies!

What aspect of the legs gives it away?

Sangahyando Saturday 11th November 2017 06:23

Quote:

Originally Posted by vpr (Post 3641887)
Thanks a lot for the quick replies!

What aspect of the legs gives it away?

They're very thin. In a Cooper's Hawk, they'd be more robust, and in a Goshawk, they'd look really powerful. Also, AFAIK a Sharpie (being a bird specialist) has proportionally longer toes (or at leas a longer middle toe) than the other two.

Nutcracker Saturday 11th November 2017 10:11

Quote:

Originally Posted by vpr (Post 3641887)
What aspect of the legs gives it away?

Quote:

Originally Posted by Sangahyando (Post 3641910)
They're very thin.

That's why it's called Sharp-shinned :t:

vpr Saturday 11th November 2017 20:54

Thanks a lot everyone. Very helpful.

The more I stare at the difference in various photos the more I can see it too. The more roundish head (maybe not obvious in the two photos I attached) also points to a sharp-shinned.

I don't think I'd be able to tell them apart in the field just yet.

nbalblas Saturday 11th November 2017 20:56

Keep practicing and put some trust in your judgement!:t:

ceasar Saturday 11th November 2017 21:47

Quote:

Originally Posted by vpr (Post 3642220)
Thanks a lot everyone. Very helpful.

The more I stare at the difference in various photos the more I can see it too. The more roundish head (maybe not obvious in the two photos I attached) also points to a sharp-shinned.

I don't think I'd be able to tell them apart in the field just yet.

Hi vpr,

It isn't as hard as you think telling them apart when you see them alive. It is more difficult telling them apart in photos. Cooper's Hawks are really quite a bit larger all around than Sharpshins are.

Read this chart from the Canadian Peregrine Foundation which gives their relative weights and measurement by sex. Notice how much more Cooper's weigh than Sharpshins do. They are a much bulkier bird. The male Sharpshin can be quite small; Blue Jay size.

http://www.peregrine-foundation.ca/r...rpshinned.html

You can find numerous pictures of both species, along with other Raptors, in this excellent website.

Bob

vpr Sunday 12th November 2017 00:37

Thanks for the link! It's very interesting and helpful.

You're right about the size - it was very small. At first glance in the field I thought it was a merlin (until I got a closer look).

njlarsen Sunday 12th November 2017 02:48

For a juvenile, the pattern of the underside is also quite different

Niels


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