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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, Colorado. Photo courtesy of Bryan Guarente.

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

Fig 3) The same bird as Figure 2. Note no trace of color in the outer primaries.