Herring Gull (argentatus & argenteus)(last update: February 11, 2013) |
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Herring Gull (argenteus) ZX A 4CY (3rd cycle), March 25 2012, Koksijde, Belgium. Picture: Peter Adriaens.3th-cycle argenteus ringed as pullus at Calais, France, in July 2009. Adult-like primaries and secondaries. Mirrors on both P9 and P10. |