glaucoides - kumlieni

(last update: January 26, 2012)

Kumlien's / Thayer's Gull (kumlieni / thayeri) adult, December 18 2011, Canal Park, Duluth, MN. Picture: Karl Bardon.

Photographed at the Superior Entry on 18 December 2011. The white mirror on P9 reaches the outer edge on the outer-web as in Kumlien's. But note the thin subterminal band on P5, the dark blackish extending along the outer-web of P10 all the way to the primary coverts, medial black on the inner-web of P9 and the rather coarse head and bill structure (all more typical of Thayer's).

See als Karl Bardon's website.