Lesser Black-backed Gull graellsii NLA 5.472.090 3CY, May 22 2014, Delft, the Netherlands. Picture: Merijn Loeve.
Ringed as pullus in 2012 at Maasvlakte-Europoort, the Netherlands.
P5 and P6 seem to be fresher than P7-P10. Inner secondaries though appear to be ordinary 2nd gen.
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