Lesser Black-backed Gull 3cy H018 June 23 2009, Utrecht, The Netherlands. Picture: Herman Bouman.
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. H366 ringed as pullus on 12 July 2007 at
Helgoland-Düne (DE).
Moult score: P8-P10 old.
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