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 (L. marinus) 5Y9 2nd pre-basic moult (2CY), July 25 2015, Race Point, Provincetown, Barnstable County, Massachusetts. Picture: Steve Arena.

Please visit Steve's Flick photostream excellent website for many more images! Banded as pullus on July 17 2014, near Portsmouth, York County, Maine USA. For more info about this project, see The Gulls Of Appledore blog.

Bird in complete moult: P8-P10 old juvenile primaries. Old juvenile wing-coverts completely worn away, exposing old juvenile secondaries underneath. Fresh outer MC boldly barred.