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) 6cy male JL49 & 5cy female J06X April 22 2011, Mandal, S Norway. Picture: Morten Helberg.

JL49 and J06X is a pair like we want them, both are ringed as pulli: JL49 was ringed in 2006 and observed once in Scheveningen, the Netherlands on 22 January 2007. Black ring J06X was ringed in 2007, and it was never observed before; it suddenly appeared in the colony this year. The breeding season for this young pair failed in 2011, they bred solitary in the middle of the monitoring area in Mandal.