L. f. graellsii H017 April 06 2008, Landfill VRSU de Pinto, Madrid, Spain. Picture: Delfín González.
Ringed 2cy graellsii, ringed in N Germany in the Helgoland-Amrum colonies. These colonies fall in the transition zone between continental graellsii "Dutch intergades" and Scandinavian intermedius. Ring-Nr Helgoland 4304001 and PVC H017, ringed on 12 July 2007 on Helgoland / Düne (54 o 11 ' N 7 o 55 ' E).
Scapulars replaced. Wing-coverts and tertials probably juvenile, but upper tertials hard to determine.
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