Unidentified adult Lesser Black-backed Gull – 20171012

Images of an adult Lesser Black-backed Gull, seen at the landfill of Blaringhem, France on 12 October 2017. It stood out because of the almost fully white head and especially the wings with a full set of primaries. I can’t decide whether wing moult still has to commence or has already been completed. Primaries and …

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