Herring Gull (argentatus & argenteus)(last update: February 11, 2013) |
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Herring Gull SS0T 3CY (moulting into 3rd cycle), July 31 2011, Koksijde, Belgium. Picture: Peter Adriaens.Herring Gull ringed as 2nd-cycle in Greater London, UK, in December 2010. Moult in coverts indicate that complete moult has started. Secondaries old 2nd gen. Moult in tail. |