LBBG graellsii 2cy H469 April 29 2008, Amsterdam, the Netherlands. Picture: Ruud Altenburg.
Ring series used at Amrum & Helgoland Islands, N Germany; two colonies in the transition zone between continental graellsii ("Dutch intergrade") and Scandinavian intermedius. Project run by Sönke Martens.
Bird ringed on 30.06.2007 Amrum / Odde 54 o 42 ' N 8 o 21 ' E
Scapulars replaced, except rear LLS. Inner wing-coverts and upper tertials replaced.
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