Thayer's Gull (thayeri)

(last update: January 22, 2013)

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

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

Visit: Karl's Pbase pages.

Tiny spot on outer web of P4 (probably hardly visible in the field) and P5 with broken band. Complete sub-terminal band on P10 and complete medial band on P10. Thayeri pattern on P9 combined with broad sub-terminal band. Medial band on P9 continues slightly on inner web, and completely covers the outer web at the mirror (P9 mirror only on inner web).

Bird probably best matches option Plate 3-c.