Great Black-backed Gull (Larus marinus)

(last update: July 12, 2015)

Jean-Michel Sauvage (France)
Morten Helberg (Norway)
Nils Helge Lorentzen (Norway)
Mars Muusse (Netherlands)

Great Black-backed Gull (Larus marinus) JU773 3CY, January 30 2016, Grou, the Netherlands. Picture Ruurd-Jelle van der Leij.

Ringed as pullus on July 17 2014 at Store Flateskaer Kristiansand Norway.

2nd generation flight feathers with very very small mirror on outerweb of P10 visible on imgaes, probably not in the field. Central tail-feather probably 3rd gen. Only few dark scaps in back.