This very rare Ivory Gull has been seen at Canal Park in Duluth, Minnesota for a few weeks and has attracted a lot of attention. I was there on January 22, and was able to get some pictures after waiting nearly 5 hours for it to show up.
This is a juvenile, meaning that it was a nestling last summer, somewhere above the arctic circle. The adult birds are pure white without the black spots.
It is a smaller gull that stays pretty much by itself and is normally never seen in this area.