Highway 13 just south of Cherryville Road, Bayfield County, 12 May 2006
The Chequamegon Bay area has only 2 records each of Thayer's and "Kumlien's" Iceland Gull. Unfortunately, my field observations and photos do not adequately distinguish this intermediate individual. Thayer's/Kumlien's Gull is front left with Herring Gull on front right. Note the size and wingtip patterns.