Thayer's Gull (thayeri)
(last update: January 22, 2013)
Thayer's Gull adult, October 27 2011, Duluth, Minnesota, US. Picture: Karl Bardon.
Visit: Karl's Pbase pages.
Much black in wing tip, with complete band on P5 and relatively broad band on P10; there is even a ghost spot on outer web of P4, but note the clean greater primary coverts and tail. Thayeri pattern on P9 combined with broad sub-terminal band.
