Thayer's Gull (thayeri)

(last update: January 22, 2013)

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

Thayer's Gull adult, November 24 2011, Duluth, Minnesota, US. Picture: Karl Bardon.

Visit: Karl's Pbase pages.

Last phase of complete moult, P10 growing. No black on P5 and broken band on P10. Thayeri pattern on P9 combined with broad sub-terminal band.

Bird probably best matches option Plate 3-e.