and should be learned well as a reference point for less common species. The larger California (commonly occurs alongside the ring-billed in the west) is a 4-cycle gull with a stouter bill and ...

One of the most powerful counters to that argument is the rare but fascinating phenomenon known as "ring species." This occurs when a single species becomes geographically distributed in a ...

For starters, ring-billed gulls are the most numerous gull species in North America. Protection under the Migratory Bird Treaty Act coupled with population growth has increased their inland ...

Their heads are white, and some also have a dark ring around their neck. These birds have short, red legs and a pink wash on their chest and underbelly. The ivory gull is another species of ...

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 ...