L. f. graellsii H.871 August 11 2010, Barneveld, the Netherlands.
Ringed 2cy Larus fuscus from N Germany, overlap zone of graellsii "Dutch intergrade" and intermedius. P5 fully grown, P6 growing, P8-P10 still juvenile. S1 new, S2 missing, other secondaries still juvenile. Active moult in rectrices.
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