Lesser Black-backed Gull graellsii NHA.G 4CY, June 28 2013, Zeebrugge, Belgium. Picture: Peter Adriaens.
Ringed as pullus in July 2010 at Zeebrugge, Belgium, now 4CY.
Mirror on P10. Complete moult started: P1-P2 replaced for 4th gen primaries. Pretty classic bird, mirror on 3rd gen P9 and P10.
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