American Herring Gull (smithsonianus)

(last update: October 30, 2015)

Coordinators:
Amar Ayyash (US)
Bruce Mactavish (Canada)
Dave Brown (Canada)
Mars Muusse (Netherlands)

American Herring Gull (smithsonianus) sub-adult, December 26 2007, Rochester, NH, USA. Picture: Mike.

See Mike's Picasa website for many more taxa and images of American Herring Gull.

Overall adult-like plumage, but note dark cetres on greater primary coverts.