Thayer's Gull (thayeri)(last update: January 22, 2013) |
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Thayer's Gull adult, February 15 2014, North Point Marina, Winthrop Harbor, IL. Picture: Maarten van Kleinwee.Visit: Maarten's blog for many more images! Heavy bill may indicate male. Thayeri pattern on P9 and full band on P5. |