Thayer's Gull (thayeri)

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

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Kumlien's Gull kumlieni 1st cycle (2CY), January 24 2012, Jodrey Fish Pier - Gloucester, MA. Picture: Ryan Schain.

Visit: Ryan's Flickr photostream.

Dark brown iris, blackish bill. Some similarity to Thayer's Gull, but KUMLIEN’S GULL paler and milkier overall with medium brown to whitish wingtips (lacking strong inner web/outer web contrast on P6-P10), lacks distinct dark secondary bar and tail band, and tertials paler and more finely patterned. Some presumed hybrids with Thayer’s look intermediate and are not safely assigned to either taxon.