[obol] [birding] possible Swainson's Hawk Linn County
calliope at theriver.com
Tue Dec 23 16:20:22 PST 2008
I agree that this looks like a Rough-legged Hawk and not a Swainson's
Hawk. The tiny bill, round head, and distribution of white are
features to consider.
Senior Leader for WINGS
On Dec 19, 2008, at 12:23 PM, Steve Seibel wrote:
> Re the dark-morph buteo Cheryl Whelchel spotted Dec 16:
> Well, it looks extremely similar, even including the barring on the
> wing feathers, to the dark-morph Rough-legged hawk in a similar
> pose, on Plate 475 of Wheeler's Raptors of Western North America.
> Wheeler doesn't mention white feathers in the back of the head but I
> think I've seen that before on dark-morph Rough-legged hawks, not
> 100% sure, certainly the light-morph ones show this. On the othe
> other hand there is no photo of a Dark-morph Swainsons in exactly
> the same pose that shows the back and wing in quite this way. The
> face and head of some of the dark-morph Swainsons pictured also
> appear consistent with this bird. However looking at Liguori's"
> Hawks From Every Angle" it sure looks like the dark-morph Rough-
> legged hawks tend to have much more light brown tones on the upper
> sides of the flight feathers (like the barring shown in the photo)
> while the dark-morph Swainsons tend to be much darker on the upper
> sides of the flight feathers with only a hint of brown barring. I'd
> say it is most likely a dark-morph Rough-legged hawk. Feel free to
> forward this post to any other group discussing the bird. Maybe
> this is already redundant as I've not been reading obol.. Steve
> Seibel, Corvallis
> On Wed, Dec 17, 2008 at 5:06 PM, Cheryl Whelchel <dirtgirl16cr125 at msn.com
> > wrote:
> On Tuesday at about 11 am I counted this raptor on Sandridge RD in
> Linn County between Ridge Drive and Rock hill. It has been
> tentatively been ID'ed as a Swainson's Hawk.
> Guess this will give us something else to argue about<Emoticon1.gif>.
> The bird stayed on the ground, and only turned its head to look at
> me. It was approx the same size as a Red-tail. Very dark, with all
> dark eyes, a small bill, with white around the bill. The plumage
> was very dark brown with washing of whiteish. Of note were white
> showing thru on the back of head feathers when it turned. Could not
> see its tail, or breast.
> Photos are posted at the following link near the bottom of the page
> Cheryl Whelchel
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