American Herring Gull (smithsonianus)

(last update: October 30, 2015)
Coordinators:
Amar Ayyash (US)
Bruce Mactavish (Canada)
Dave Brown (Canada)
Mars Muusse (Netherlands)

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American Herring Gull (smithsonianus) 2nd cycle (2CY), October 07 2016, Michigan City, IN. Picture: Amar Ayyash.

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2nd cycle Herring Gull. A very obvious marbling to the greater coverts and tertials, unlike in 1st cycle birds. The primary tips are rounded (and still growing - see 2nd image).

Below: A still largely marked tailband, with reduced markings on the upper rump. The inner primaries are more silvery than is seen on 1st generation primaries. The axillaries are mostly white as expected at this age.