Lesser Black-backed Gull 6cy X1 December 02 1012, Landfill VRSU de Colmenar Viejo, Madrid, Spain. Picture: Delfín González.
Ringed 6cy graellsii in winter, ringed by Roland-Jan Buijs in 2007 in SW Netherlands, as pullus at Moerdijk (Tetra Pak), Noord-Brabant, (NL 5141.00 N 436.00 E). Moult score: P9/-.
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