Thayer's Gull (thayeri)(last update: January 22, 2013) |
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Thayer's Gull sub-adult, March 14 2011, Englishman River, Parksville, BC, Canada. Picture: Ralph Hocken.Visit: Ralph's Flickr photostream. Note markings on tail and wing-coverts. Sub-adult birds often have more black in the wing-tip than full adults. |