[Tweeters] feather ID

Valerie Anderson valhikes at gmail.com
Mon Jun 27 19:59:12 PDT 2016


Thank you to everyone who took the time to research my feather question.
Wow! I also asked my friend and top owl guy Khanh Tran and he supports the
Great Horned Owl idea.
Makes sense to me, but if you all could see the photos in our feather book,
"Bird Feathers" by S. David Scott and Casey McFarland, my feather is a
dead-ringer for the Great Gray Owl.
Thanks again for your input.
Happy birding.
Valerie

On Mon, Jun 27, 2016 at 9:52 AM, Faye McAdams Hands <zest4parus at hotmail.com>
wrote:


> Thanks Jamie for the in-depth tutorial!

>

> Faye McAdams Hands

> zest4parus at hotmail.com

> Belfair, WA

>

> "Life is simple - eat, sleep, bird."

>

>

> ------------------------------

> From: owler at sounddsl.com

> To: zest4parus at hotmail.com; valhikes at gmail.com; tweeters at u.washington.edu

> Subject: RE: [Tweeters] feather ID

> Date: Sat, 25 Jun 2016 14:32:47 -0700

>

>

> Thanks Valerie, for sharing this experience.

>

>

>

> I certainly agree that separating these two species based on a feather is

> challenging, but here is why I believe it to be a GHOW feather:

>

>

>

> Both GGOW and GHOW leading primaries are approximately 10” in length . (

> http://www.fws.gov/lab/featheratlas/) I believe Valerie’s feather to be

> a leading primary based on the comb on the leading edge of the feather.

>

>

>

> While somewhat similar in appearance, the shape, blotchiness

> (irregularness to the banding) and proportions are different for these two

> species. In the GGOW leading primary, about half the feather is oval in

> shape before it radically tapers down, rather than the more 2/3 length

> rectangular ovoid shape of the GHOW. In Valerie’s feather, only the first

> band nearest the base is “blotchy” (irregular?).{I think blotchy is a good

> descriptive word; nuts to Siri}. The GHOW feather I have in my personal

> collection from NE Ohio also exhibits a blotchy/irregular band nearest the

> base, with the rest similar to the GHOW in the Feather Atlas as well as

> Valerie’s. In a GGOW feather, I would expect all the bands to be more

> blotchy/irregular.

>

>

>

> If Valerie wouldn’t mind taking a photo with a ruler (cm) next to the

> feather, the proportions might show up a bit more pronounced. (If you do

> take a photo, if you wouldn’t mind taping the tip down to straighten it

> out a bit more, as in the online photos.) The main feathering, the more

> rounded ovoid, of the GGOW is from 6-18 cm. On the GHOW, this more

> rectangular ovoid is from 6- to nearly 20 cm. The overall length of the

> GGOW leading primary is slightly less than 26 cm. The overall length of

> the GHOW leading primary is slightly longer than 26 cm. The overall

> wingspans of both species are similar (GGOW-140-142 cm, GHOW 134-143 cm).

> At the greatest width, the GHOW leading primary feather is slightly over 4

> cm. The GGOW is nearly 6 cm, a noticeable difference which gives the GGOW

> a more rounded ovoid appearance to the feather. (Does this make sense?)

>

>

>

> That all being said, the differences in size between the sexes make the

> above measurement comparisons somewhat suspect since we don’t know the sex

> of Valerie’s bird. The GHOW feather from the Feather Atlas is from a male

> from Oregon, and the GGOW feather a female also from Oregon. However, the

> proportions argument should hold true, as well as the “blotchiness” factor.

>

>

>

> -Jamie

>

>

>

> J. Acker

>

> owler at sounddsl.com

>

> Bainbridge Island, WA

>

>

>

> *From:* Faye McAdams Hands [mailto:zest4parus at hotmail.com]

> *Sent:* Saturday, June 25, 2016 1:26 PM

> *To:* J. Acker <owler at sounddsl.com>; 'Valerie Anderson' <

> valhikes at gmail.com>; Tweeters at u.washington.edu

> *Subject:* RE: [Tweeters] feather ID

>

>

>

> Dear Jamie and Tweeters,

>

> I don't know.....looking at my book ("Bird Feathers", Scott and McFarland)

> and checking those 2 awesome resources that you shared Jamie,

> I can certainly see why Valerie would say Great Gray Owl, and I am leaning

> that way myself.

> They are pretty similar, which makes sense.

> When looking at the Great Gray's primaries, the banding looks more

> blotchy, not as crisp and distinct as on the Great Horned. And the pictures

> shared by Valerie seem to be more like that blotchiness. (apparently Siri

> says that's not a real word).

> But I'm no expert.

> Could you please give more detail as to why you say Great Horned vs. Great

> Gray?

> Thanks for the learning opportunity,

> Faye

>

> Faye McAdams Hands

> zest4parus at hotmail.com

> Belfair, WA

>

> "Life is simple - eat, sleep, bird."

>

> ------------------------------

>

> From: owler at sounddsl.com

> To: valhikes at gmail.com; tweeters at u.washington.edu

> Subject: RE: [Tweeters] feather ID

> Date: Sat, 25 Jun 2016 12:50:38 -0700

> CC:

>

> Valerie & Tweeters,

>

>

>

> Here is are two great resources for IDing feathers:

>

>

>

> http://www.fws.gov/lab/featheratlas/

>

>

> http://digitalcollections.pugetsound.edu/cdm/landingpage/collection/slaterwing

>

>

>

>

>

> I believe what you found was the leading primary to the left wing of an

> adult Great Horned Owl.

>

>

>

> -Jamie

>

>

>

> J. Acker

>

> owler at sounddsl.com

>

> Bainbridge Island, WA

>

>

>

> *From:* tweeters-bounces at mailman1.u.washington.edu [

> mailto:tweeters-bounces at mailman1.u.washington.edu

> <tweeters-bounces at mailman1.u.washington.edu>] *On Behalf Of *Valerie

> Anderson

> *Sent:* Saturday, June 25, 2016 12:20 PM

> *To:* tweeters at u.washington.edu

> *Subject:* [Tweeters] feather ID

>

>

>

> Hi Tweets,

>

> This week I was backpacking in the Teanaway region (Bean Creek/Stafford

> Creek/Navaho Pass), which is just NE of Cle Elum. I found a feather right

> in the middle of the trail, at about 4000 or 5000 feet elevation. Using my

> feather identification book, we concluded that it belongs to a Great Gray

> Owl....but I didn't know they visited that area. I have been unsuccessfully

> seeking out these owls for the past few years and it would be so ironic

> that I would stumble across one of their feathers when I wasn't even

> thinking about them!

>

> Any insight to confirm or reject this identification? It is about 10" in

> length, and has all the characteristics of an owl feather. Sorry the photos

> are not the greatest. Here's the link:

> https://www.flickr.com/photos/64943435@N07/

>

> Thanks

>

> Valerie Anderson

>

> Olympia, WA

>

>

> _______________________________________________ Tweeters mailing list

> Tweeters at u.washington.edu

> http://mailman1.u.washington.edu/mailman/listinfo/tweeters

>

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mailman1.u.washington.edu/pipermail/tweeters/attachments/20160627/385757a8/attachment-0002.htm


More information about the Tweeters mailing list