Lesser Black-backed Gull 2cy SYAC March 04 2012, Landfill VRSU de Colmenar Viejo, Madrid, Spain. Picture: Delfín González.
Ringed 2cy graellsii, ringed as pullus in Belgium in 2011. All scapulars replaced, fresh US probably now replaced for 3rd gen feathers. Tertials and coverts juvenile.
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