Last weekend, Kathy and I drove over to California’s beautiful North Coast. We were biking through the pasturelands, northwest of Eureka, when we began seeing geese—thousands of them. It seemed that every pasture hosted a healthy flock of feeding little cacklers. “Wait a minute,” I said. “Those aren’t cacklers, they’re Aleutian geese.” Every bird displayed the characteristic white ring at the base of its neck.