Ross's Geese

Northern Wellington County Bird Sightings

Moderator: wcleung

Ross's Geese

Postby Clicker on Wed Oct 08, 2014 9:45 pm

spotted at Pike Lake in Mount forest
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snowgeese.jpg
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Last edited by Clicker on Tue Oct 14, 2014 7:22 pm, edited 2 times in total.
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Re: Snow Goose (?)

Postby Peter C. on Thu Oct 09, 2014 8:51 am

Hi Clicker-

This is a very neat find. I cannot tell from this image alone, but to my mind these look much more like a quartet of Ross's Geese - two adults and two hatch-year birds. If true, that would be a much rarer find!

The bills look very small, short, and triangular to me, unlike the more convention goose-shaped bill of a Snow ... also, I don't see any evidence of the diagnostic "grinning patch" on the bills of these birds.

But it would be really good to see a "blow-up" of the group of geese in question, to look at those bills better - would it be possible for you to crop that photo, and get a bigger image, even if the resolution turns out bad?

Peter
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Re: Snow Goose

Postby fred.urie on Thu Oct 09, 2014 6:43 pm

Juv Ross's Goose compared to Canada Goose
(Mississauga - Nov 6, 2012)

Image
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Re: Snow Goose

Postby Clicker on Thu Oct 09, 2014 8:01 pm

best I could do Peter they were quite far out.
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Re: Snow Goose

Postby Peter C. on Sat Oct 11, 2014 8:00 am

Thanks, that actually is quite a bit better. Not sure about the adults, but the juvvies definitely look quite small-billed.
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Re: Snow Goose

Postby wcleung on Sun Oct 12, 2014 9:23 pm

This is very neat. I found a website on the differences, and in particular it has several nice photos with both species. I'm voting Ross. http://biology.eku.edu/kos/goose_id.htm Cheers, Debbie
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Re: Ross's Geese

Postby fred.urie on Wed Oct 15, 2014 9:03 am

"In the Identification Guide to North American Birds Part 2, Pyle states the range in size of the gap along tomia in Lesser Snow Goose as 7-12 mm wide and in hybrids as 4-9 mm wide. The gap between mandibles in Ross's Goose is narrower forming no or a thinner dusky stripe along tomia. Many Ross's Geese show a slight gap between the mandibles."
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Re: Ross's Geese

Postby fred.urie on Wed Oct 15, 2014 6:06 pm

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Re: Ross's Geese

Postby Clicker on Wed Oct 15, 2014 6:39 pm

so my question is which is it. Lessor Snow Geese or Ross's Geese or Snow Geese or hybird?
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Re: Ross's Geese

Postby fred.urie on Sat Oct 18, 2014 8:27 am

Photos by Dan MacNeal of hybrid, Ross and Snow found by Ken Burrell @ Damascus Reservoir:

http://ebird.org/ebird/view/checklist?subID=S20260947
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Re: Ross's Geese

Postby Clicker on Thu Oct 23, 2014 6:21 pm

Fred I think those are the same geese. Damascus Resevoir is just down the road from where I took the picture. lol.
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