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12/31/08 Slaty-backed Gull

First-cycle Slaty-backed Gull, found on 12/31/08 by Oscar Johnson, at Venice Beach, Half Moon Bay, San Mateo California.
Slaty-backed Gull, first-cycle
Slaty-backed Gull, first-cycle		 Slaty-backed Gull, first-cycle
Slaty-backed Gull, first-cycle		 Slaty-backed Gull, first-cycle
Slaty-backed Gull, first-cycle		 Slaty-backed Gull, first-cycle
Slaty-backed Gull, first-cycle
Slaty-backed Gull, first-cycle
Slaty-backed Gull, first-cycle		 Slaty-backed Gull, first-cycle
Slaty-backed Gull, first-cycle		 Slaty-backed Gull, first-cycle
Slaty-backed Gull, first-cycle		 Slaty-backed Gull, first-cycle
Slaty-backed Gull, first-cycle
Slaty-backed Gull, first-cycle
Slaty-backed Gull, first-cycle		 Slaty-backed Gull, first-cycle
Slaty-backed Gull, first-cycle		 Slaty-backed Gull, first-cycle
Slaty-backed Gull, first-cycle

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lucas brug 23-Jan-2009 04:45
1st cycle Slaty-backs should have more obvious white tips on the primaries on the standing bird. There is too much dark in the outer primaries in the flying bird, should only be dark on the outer primaries. Bill has too much of a gonydeal angle. Tailband is too dark and too obvious. I think this is a HerringxGlaucous-winged Gull
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