Lesser Black-backed Gull graellsii NLA 5.469.997 3CY, July 07 2014, Katwijk, the Netherlands.
3cy graellsii, ringed at Europoort,
(51.57N 04.08E) on July 02 2012. This bird has a 2nd generation tail, with R1 replaced for 3rd gen. All secondaries 2nd gen. Complete moult started: P1-P2 new, P3 growing, P4 missing, P5-P10 old 2nd gen.
New grey coverts are fresh, related to this active complete moult; no extensive moult happened at the wintering grounds.