Thayer's Gull (thayeri)

(last update: January 22, 2013)
Coordinators:
Amar Ayyash (USA)
Mars Muusse (Netherlands)

thayers rings
thayers PDF's

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Thayer's Gull first cycle (2CY), February 15 2007, Everett, Snohomish County, Washington. Picture: Steve Mlodinow.

Visit: Steve's Flickr photostream.

For comparison, a GW Gull type bird in background. Note the difference in the "skirt" formed by the secondaries.