Gull Research Organisation

American Herring Gull (smithsonianus)

(last update: October 30, 2015)

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

smith 1cy August
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American Herring Gull (smithsonianus) adult, October 07 2016, Michigan City, IN. Picture: Amar Ayyash.

Please visit Anything Larus for more images!

Adult type Herrings. Left bird already in nonbreeding condition while the bird on the right has bright legs and bill. The most natural explanation for this is hormonal variance.