Thayer's Gull with Glaucous Gulls, Herschel Island, Yukon. 10 August 2015.

An adult Thayer's Gull flying with Glaucous Gulls at Pauline Cove, Herschel Island, Yukon on 10 August 2015.

 

The ID can be a bit tricky as Glaucous x Herring gull hybrids are regular at Herschel. However, this gull's dark eye, bring pink legs, small bill, darker grey mantle, and wing pattern distinguishes it.

 

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