[wisb] Re: Hawk in Glendale ( coopers or gos )
- From: vbirdman@xxxxxxx
- To: wisbirdn@xxxxxxxxxxxxx
- Date: Wed, 16 Sep 2009 22:22:39 -0400
Great thread and comments by Ryan and Brian. A couple of years ago we
had an interesting similar thread on one of the Illinois listservs.
Here's the link for those interested:
http://www.ilbirds.com/index.php?topic=284.0
Vic Berardi
Email: VBirdman@xxxxxxx
Raptor Blog: http://theraptorphile.blogspot.com/
-----Original Message-----
From: Ryan Brady <ryanbrady10@xxxxxxxxxxx>
To: wisbirdn@xxxxxxxxxxxxx
Sent: Wed, Sep 16, 2009 4:48 pm
Subject: [wisb] Re: Hawk in Glendale ( coopers or gos )
As Brian said, the supercilium is variable among accipiters and in my
opinion is
an extremely overrated field mark. It can be used in combination with
other
features but honestly it ranks way down the list of things to look at
for
separation of these species.
As others have noted, this bird is a juvenile Cooper's Hawk.
Ryan Brady
Washburn, Bayfield County, WI
http://www.pbase.com/rbrady
----------------------------------------
> Date: Wed, 16 Sep 2009 16:18:22 -0500
> Subject: [wisb] Re: Hawk in Glendale ( coopers or gos )
> From: rawshooter@xxxxxxxxx
> To: wisbirdn@xxxxxxxxxxxxx
>
> Hi John,
> I was one that disagreed with the Goshawk ID. The reason is I have
photos
> of an immature Cooper's from my back yard with what appears to be a
fairly
> distinct off white supercillium. I am very sure it came from a nest of
> Cooper's that was just a couple blocks away and I had seen the yo
ung
on many
> occasions. Also if you do a google image search for immature cooper's
you
> will see many many photos of them with what appears to be a off white
-
> light tan line above the eye and extending back. I am far far from an
> expert but have learned over time that it is impossible for Sibleys
or any
> other book to capture all plumages etc... in their drawings and photos
> especially when it comes to immature birds or birds that have big
> differences in breeding to non breeding plumage. I tend to rely more
on the
> photos I dig up from reliable sources on the web as long as there is
more
> than just one example.
>
> Also while searching you find many discussions about the supercillium
of
> both species. Some saying bright white to pale on the Goshawk and
others
> mentioning pale on the immature Cooper's
>
> http://www.mbr-pwrc.usgs.gov/Infocenter/i3330id.html
>
> The supercillium in Paul's photos looks pale to me or tan although
somewhat
> distinct. I would like to know what the records say about Goshawk
sightings
> in southeast Wisconsin. I have read up on them somewhat and thought
they
> were not migratory and only really move south when the food supply is
bad
> ie; during irruptions and mainly in the winter or late winter/early
spring.
>
> Brian Hansen
> Milwaukee
>
>
>
> On Wed, Sep 16, 2009 at 3:08 PM, john romano wrote:
>
>>
I am not the one person who responded to Paul with a Goshawk ID.
However
>> the photos show an obvious white eyeline on the raptor. Both the
Sibley and
>> the Peterson guides make a note of the supercillium as an
identifying mark
>> for a junvenile Goshawk and not for the Coopers Hawk.
>>
>> So I am wondering why this raptor would not be a Goshawk junenile
instead
>> of a Coopers Hawk.
>>
>> John Romano
>> Madison Wi
>>
>>
>> --- On Tue, 9/15/09, Paul Sparks wrote:
>>
>>
>> From: Paul Sparks
>> Subject: [wisb] Re: Hawk in Glendale
>> To: "Wisconsin Bird Net"
>> Date: Tuesday, September 15, 2009, 5:21 PM
>>
>>
>> Just an update for everyone. Most people think the bird is a female
>> Cooper's
>> Hawk. I did get one person that thought it was a Northern Goshawk,
and that
>> was in the back of my mind and if I'm honest that's what I had hoped
it
>> was.
>> No matter what the bird is, I was glad I saw it and hope it comes
back for
>> better photos.
>> Paul Sparks
>> Glendale, Milwaukee County
>>
>> On Tue, Sep 15, 2009 at 3:32 PM, Paul Sparks
>> wrote:
>>
>>> This morning I walked out into my backyard with my camera to see if
there
>>> were any good birds back there. Yesterday I had seen a couple
warblers of
>>> undetermined species and a Northern Waterthrush feeding in the
grass.
>>> Immediately I saw a good sized hawk si
tting on the bridge that
crosses
>> the
>>> creek, which comes off the Milwaukee river near Kletsch Park. I
thought
>> it
>>> was a Red-tailed Hawk because of the size, but after looking at the
>> photos,
>>> I’m pretty sure that isn’t the case. Here are 3 photos showing
different
>>> parts of the bird. The bird was sitting in the shade with a very
bright
>>> background, so the photos aren’t that great but you should be able
to get
>>> the idea. I’d say Cooper’s Hawk, but it seemed really big. I’d love
some
>>> feedback on this on what the ID is on this guy.
>>> Here's a link to the photos with the same description as above;
>>> http://photogsparks.wordpress.com/
>>>
>>> Paul Sparks
>>> Glendale, Milwaukee County
>>>
>>>
>>>
>>>
>>
>>
>> --
>> www.paulcsparks.com
>>
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