Herring Gull (argentatus & argenteus)(last update: February 11, 2013) |
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Herring Gull 4CY, February 21 2014, Katwijk, the Netherlands.3rd gen flight feathers: adult-like inner and central primaries, mirror on P9 and P10. Secondaries grey with white tips. Some black in tail. Brown markings on many coverts. |