Lesser Black-backed Gull graellsii 4CN8 2CY, October 04 2015, Portimao, Portugal. Picture: Carl Baggott.
2CY LBBG, ringed on July 12 2014 at Burhou, Alderney, Channel Islands by Paul Veron.
Partial autumn moult include many of the visible LLC, MC and innermost GC.
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