Herring Gull (argentatus & argenteus)(last update: February 11, 2013) |
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Herring Gull (argenteus) NLA 6.175.694 3CY, March 16 2016, Katwijk, the Netherlands.Local argenteus ringed as pullus on July 15 2014 at Dintelhaven - Maasvlakte, the Netherlands. No partial autumn moult in coverts nor in the tertials. |