Aphriza virgata
tags: Surfbird, Aphriza virgata, birds, mystery bird, bird ID quiz
[Mystery bird] Surfbird, Aphriza virgata, photographed at "Land's End", an area in San Francisco on the Pacific Coast. [I will identify this bird for you tomorrow]
Image: Terry Sohl, 18 December 2008 [larger view].
Photo taken with Canon 50D, 400 5.6L.
Please name at least one field mark that supports your identification.
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