This interesting gull shows the field marks consistant with a hybrid between a Great Black-backed and Herring Gull. The intermediate size, back color, bill shape, primary pattern, and faint head streaking all point to a Herring X GBBG. This bird also matches published (and on-line) photos of presumed Herring X GBBG hybrids.
These photos were taken with a Canon 60D Digital Camera with a 100-400mm zoom lens.
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