Thayer's Gull (thayeri)(last update: January 22, 2013) |
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Thayer's Gull adult, November 30 2011, Duluth, Minnesota, US. Picture: Karl Bardon.Visit: Karl's Pbase pages. Thin crescent of black on P5 and broken band on P10. Thayeri pattern on P9 combined with broad sub-terminal band. Bird probably best matches option Plate 3-f. |