MINNEAPOLIS â Too many geese and too much poop are stirring up controversy in Rochester these days over how best to control the city's beloved goose population. The town has long embraced the flocks of resident Canada geese that wander its riverfront and parks long after the migratory geese wing out of town. But an overabundance of goose feces that slicks up trails, dirties playgrounds and beaches and contaminates water prompted city officials to take action this spring to reduce the number of goslings that will hatch. Over the past two weeks, a private company hired by the city and a group of recruited volunteers have roamed four local parks searching for goose eggs to slather in corn oil, which cuts off the oxygen supply needed for a gosling to develop.