Thayer's Gull (thayeri)
(last update: January 22, 2013)
Thayer's Gull adult, October 07 2011, Duluth, Minnesota, US. Picture: Karl Bardon.
Visit: Karl's Pbase pages.
Last phase of complete moult, P10 growing. Much black in wing tip, with nearly complete band on P5 and relatively broad band on P10. Thayeri pattern on P9 combined with broad sub-terminal band. Bird probably best matches option Plate 3-i.
Last (innermost) secondaries still missing.
