This gull was called out as a very dark Kumlien's Gull, but I thought the mantle was too dark and too much black on the wing tips.
Today I think it looks like an adult winter Herring x Thayer Gull hybrid. The eye being too light for a typical Thayer's.


Thayer's Gull x Herring Gull hybrid?
South of Long Island, New York, USA - February 11, 2006
Canon EOS 20D, Canon 400mm f/5.6 L USM
© Martin Lofgren


Thayer's Gull x Herring Gull hybrid?
South of Long Island, New York, USA - February 11, 2006
Canon EOS 20D, Canon 400mm f/5.6 L USM
© Martin Lofgren


Thayer's Gull x Herring Gull hybrid?
South of Long Island, New York, USA - February 11, 2006
Canon EOS 20D, Canon 400mm f/5.6 L USM
© Martin Lofgren


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