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) JA615 2cy, 3cy & 4cy: January 2009, March 2010, February & March 2011, Scheveningen, the Netherlands.

CR-Code Black ring with white code: JA615 LBNW(JA615);RBM
Ringing Centre Stavanger Museum (Norway) Ring number 3022815
Species Great Black-backed Gull  Larus marinus
Sex Unknown Age Pullus Date 30.06 2008 (--:--) Accurate to the day
Place Leiesundholmen, Mandal, Vest-Agder, Norway - 58°00'25"N 007°25'38"E
Condition Alive and probably healthy and released by a ringer
Ringer(s) Helberg, Morten - Jørgensen, Finn -

below: JA615 2cy: January 25 2009, Scheveningen. Picture: Maarten v Kleinwee.

Scapulars replaced, but visible wing-covert and tertials still juvenile.

below: JA615 3cy: March 21 2010, Scheveningen. Picture: Maarten v Kleinwee.

No completely black saddle.

below: JA615 4cy: February 01 2011, Scheveningen. Picture: Theo Muusse.

Third winter in succession at this location.

below: JA615 4cy: March 13 2011, Scheveningen. Picture: Vincent vd Spek.

Mirror on P10, large white spots on outer primaries, but still barred greater coverts.