L. f. graellsii HC63 November 21 2010, Landfill VRSU de Colmenar Viejo, Madrid, Spain. Picture: Delfín González.
Ringed 1cy 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.
Most scapulars still juvenile, wing-coverts and tertials still juvenile. US: 1-25%, LS 0%, TOT SCAPS: 1-25%.
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