Lesser Black-backed Gull 3CY, May 20 2014, Katwijk, the Netherlands.
3CY graellsii type bird. Primaries and secondaries 2nd generation but most of rectrices replaced for 3rd generation. Several inner wing-coverts replaced in the partial autumn moult, now plain grey. Complete moult just started: P1 dropped, P2-P10 old 2nd generation.
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