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Tom Grey | all galleries >> North American Birds by Type >> Gulls > Gull sp.
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03-MAR-2017 Tom Grey

Gull sp.

Pilarcitos Creek mouth, Half Moon Bay

When I photographed this gull I thought it was the same bird as the similar first-cycle gull of doubtful ID that I was seeing at this spot, which Alvaro Jaramillo has since suggested is a Glaucous hybrid, possibly Glaucous x Herring. But when I examined the picture I noticed the gray mantle, making the bird second- rather than first-cycle, and the dark wingtips, where the other bird was all-white. Two possible IDs with expert support are Thayer's Gull, and Glaucous-winged x Herring.

Canon EOS-1D X ,Canon EF 500mm f/4L IS II USM
1/5000s f/8.0 at 700.0mm iso1600 full exif

other sizes: small medium large original auto
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