LBBG graellsii 2cy H458 April 06 2008, Madrid, Spain. Picture: Delfín González.
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.
Scapulars replaced, except rear LLS. Wing-coverts and tertials still juvenile.

|