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) 8J4 1st cycle (1CY-2CY), December 2013 & January 2014, Galilee Harbor, RI. Picture: Keith Mueller.

Banded as pullus on Appledore Island, July 2013.

below: Larus marinus 8J4 1st cycle (1CY), December 29 2013, Galilee Harbor, RI. Picture: Keith Mueller.

below: Larus marinus 8J4 1st cycle (2CY), January 12 2014, Galilee Harbor, RI. Picture: Keith Mueller.

US=75-99%, LS=25-50%, TOT SCAPS=50-75%. Coverts and tertials still juvenile.