Nearly all white large gull near China Beach today

Joel Perlstein

Perched on a rocky cliff just west of China Beach around 4 pm today.  Looked longer and chunkier than a nearby Western Gull. Plumage all white except for some light  grayish markings on the head. Legs pink, eyes dark, bill light colored with some black near the tip. Could this be an albino/leucistic Western Gull?
Joel Perlstein 
San Francisco

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