The larger California (commonly occurs alongside the ring-billed in the west) is a 4-cycle gull with a stouter bill and dark eyes in all ages. The adult California has slightly darker medium gray ...

Author says gull species are amazingly adaptive, and the Great Lakes area is a perfect spot to find many of them.

Many years, ring-billed gulls are the most common wintering gull in Kansas, having moved southward from nesting areas in central Canada and some places in the American West. Like many birds, ringbills ...