L. f. graellsii 15cy MAFZ June 24 2011, Texel - Kelderhuispolder, the Netherlands. Picture Maarten van Kleinwee.
Ringed as pullus (female) on July 01 1997, IJmuiden, The Netherlands. Colour ring added May 22 2008, Texel.
Adult Lesser Black-backed Gull in full summer (alternate) plumage. At the time of ringing this individual it was determined to be a male and was therefore ringed with a ring starting with M, indicating a male. Breeding behavior in later years clearly showed this to be a female though.
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