Lesser Black-backed Gull 2cy 6UF March 25 2012, Landfill VRSU de Colmenar Viejo, Madrid, Spain. Picture: Delfín González.
Ringed 1cy graellsii, ringed in the UK.
All coverts and tertials juvenile. Probably, several upper scaps already 3rd gen, lowest row of scapulars fresh 2nd gen.
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