Lesser Black-backed Gull graellsii Y.BJC adult, September 14 2015, Boulogne-sur-Mer, NW France. Picture: Jean-Michel Sauvage.
Data pending, but certainly ringed as breeding adult at forteiland, IJmuiden, the Netherlands in 2015. A continental graellsii population sometimes referred to as 'Dutch intergrades' between British graellsii and Scandinavian intermedius.
Complete moult: P5 fully grown, P8-P10 old.
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