As requested, here are Harry’s Cackling Goose pages from the old Idaho
Birds site:
https://idahobirds.net/identification/cackling.html

This is the table of contents to the pages. I recommend opening them in
a new tab or window in order to keep the contents handy. Don’t try to
use the Identification Page link that’s on the pages. That’s broken and
will just re-route you to the Idaho Birds home.

I would like to add Cackling Goose and the rest of Harry’s ID writings
to the new site when I can, but until that’s done the above address
should work. If anyone has any problems viewing it let me know.

Lisa

On 02/05/2018 10:22 AM, ‘Kahl, Steve’ Steve_Kahl@fws.gov [ible] wrote:
> All – Just wanted to say thanks for your input.  I am enjoying the
> process of learning and hoping I can shed some light on the subspecies
> of CANG/CACG that winter in our area, and not just taking for granted
> that they are all moffitti because that is what they are “supposed” to be.
>
> Interestingly, the numbers of these smaller geese continues to climb
> around here. Sat I counted over 700 CANG loafing/preening at the
> Pocatello Water Pollution Control Plant pond. At LEAST 50 were these
> smaller birds.  I especially noted a group of 6 that separated
> themselves from the rest of the masses and took off as a (perhaps
> family) group.
>
> Part of my thought process about these possibly being parvipes birds
> is that the range maps in Baldassare’s Ducks, Geese, and Swans of NA
> (the update to the famous Frank Bellrose tome) shows parvipes
> wintering in all of ID, but the SE.  In contrast, the map for
> Taverner’s CACG show them wintering in far west OR/WA. Thus, it would
> seem to be that the closer wintering population would be more likely
> to show up here.
>
> I did more research on Taverner’s and it underscored the size
> similarity w/ parvipes that has been mentioned.  Coming from the east,
> where Richardson’s is the typical CACG, I am used to cacklers being
> very small and obvious..
>
> I’m working on the pictures, but can’t seem to get close enough to the
> birds to get decent snaps.  The geese around here still seem very
> jittery from the waterfowl season.
>
> I have not been able to find Krueger’s treatise on these birds.  I can
> find Google hits for it.  But they all bring me to the Idaho Birds
> home page and the article does not seem to be located there anymore. 
> If anybody by chance has a hard copy or some other means to see it let
> me know.
>
> Thanks again!
>
> Steven F. Kahl
> Deputy Project Leader
> Southeast Idaho National Wildlife Refuge Complex
> 4425 Burley Dr., Ste. A
> Chubbuck, ID 83202
> P (208) 237-6615 ext 112
> F (208) 237-8213
>
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>

—
Cliff and Lisa Weisse
Island Park, Idaho
cliffandlisa@octobersetters.com