Thayer's Gull (thayeri)

(last update: January 22, 2013)

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

Thayer's Gull adult, December 07 2011, Duluth, Minnesota, US. Picture: Karl Bardon.

Visit: Karl's Pbase pages.

Left wing much more lack in wing tip than right wing (really same bird?), which comes close to kumlieni, lacking medial black on P10. No black on P5 and broken band on P10. Thayeri pattern on P9 combined with broad sub-terminal band. Medial band on P9 hardly reaching inner web on right wing, however it is completely covering outer web at the mirror.

Bird probably best matches option Plate 3-n.