Gull Research Organisation

Thayer's Gull (thayeri)

(last update: January 22, 2013)

Coordinators:
Amar Ayyash (USA)
Mars Muusse (Netherlands)

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Thayer's Gull sub-adult, March 07 2011, Parksville, Vancouver Island, BC. Picture: Guy Monty.

Visit: Guy's Flickr site.

P10 and P5 with complete sub-terminal bands, and in general extensive black in wing-tip (more than in average full adults). Dark iris. Note dark lines on graeter primary coverts, indicating immaturity.