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adult Glaucous Gull

Fig 1) This bird has already obtained a clean white head. The head shape and bill size suggest this may be a female. Note the primary extension is much shorter than Iceland Gull. March 3, 2004, Greeley, CO. Photo courtesy of Bryan Guarente; copyright 2004.

Fig 2) This is a different bird from above, but again note the clean white head at this early date. February 10, 2004, Chicago, IL. Photo courtesy of Kanae Hirabayashi; copyright 2004.

Fig 3) The same bird as Figure 2. Note no trace of color in the outer primaries. February 10, 2004, Chicago, IL. Photo courtesy of Kanae Hirabayashi; copyright 2004.