Lesser Black-backed Gull graellsii HDA.F 3CY, August 01 2010, Koksijde, Belgium. Picture: Peter Adriaens.
Ringed as pullus in July 2008 at Zeebrugge, Belgium.
Complete moult: P1-P3 replaced for 3rd gen primaries (P3 with sub-terminal black), P4 growing. P7-P10 old 2nd gen. Pretty classic graellsii-type bird, with primaries and secondaries old 2nd gen in late winter and only few tail feathers replaced last winter.
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