The darker the color, the more favorable the climate conditions are for survival. The outlined areas represent approximate current range for each season. More on reading these maps.
Nearly any gull will wander into a fast food restaurant parking lot, but this one seems especially prone to such behavior. This human “commensal”—the term for a species that benefits from another without causing it harm or benefit—has increased in number in recent decades, even without the effects of climate change. Audubon’s climate model predicts a less secure future, however, as less than a third of currently suitable climate space in summer is forecast to remain in that condition by century’s end. In a changing climate, robust monitoring is warranted—even for a resourceful and adaptable generalist like the Ring-billed Gull.