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 ...

Brett Westwood follows gulls away from the sea and explores how they thrive in cities and at the landfill sites where birders gather to watch and ring them ... difference Gull species are ...

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 ...