Herring Gull (argentatus & argenteus)(last update: February 11, 2013) |
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Herring Gull (argenteus) Y.CTB 1CY, August 28 2018, IJmuiden, the Netherlands.Ringed in breeding season 2018 at forteiland - IJmuiden, the Netherlands. Several 2nd gen like wing-coverts in inner half of the wing (e.g. GC6-8; but also in MC and LLC). |