Re: [cobirds] ID help wanted - immature Larus Gull Cherry Creek SP (Glaucous-winged??)

Ben, glaucous-winged Gull is concolorous-all one color. And paler than your bird. Your bird has blacker tertials and primaries. It is Herring Gull. 

Nick Komar

Fort Collins CO

On Dec 6, 2018, at 10:39 PM, Ben S <benrmnp@gmail.com> wrote:

Hi all - 

This bird was on the sandbar, along with many Ring-billeds, Herring, and a Thayer's. This bird was a juvenile or 1st winter. Deep pink legs. Light brown overall, with some white on rumps and around bill. Herring Gull sized, but the bill seemed a good deal thicker than a Herring. Because of these features, I am leaning towards Glaucous-winged Gull. If it is not, sorry for the false alarm. 

I am having trouble uploading pictures on google groups. To see the below picture larger, go to my ebird checklist for it at : https://ebird.org/view/checklist/S50485117

Ben Sampson

Centennial, CO

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