Great Black-backed Gull (Larus marinus)

(last update: July 12, 2015)
Coordinators:
Jean-Michel Sauvage (France)
Morten Helberg (Norway)
Nils Helge Lorentzen (Norway)
Mars Muusse (Netherlands)

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Great Black-backed Gull (Larus marinus) 1U4 1st cycle (2CY), January 12 2014, Galilee Harbor, RI. Picture: Keith Mueller.

Banded as pullus on Appledore Island, July 2013.

US=50-75%, LS=0%, TOT SCAPS=1-25%. Coverts and tertials still juvenile.