Lesser Black-backed Gull 1cy AS December 06 2012, Landfill VRSU de Colmenar Viejo, Madrid, Spain. Picture: Delfín González.
Ringed 1cy graellsii, ringed at Maasvlakte, in the Netherlands.
US: 100%, LS: 25-50%, TOT SCAPS: 50-75%. All coverts and tertials juvenile.
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