Although they have a name symbolic of Canada, Canada geese are creating problems in urban areas well beyond our borders. Their over grazing can cause agricultural and natural resource damage. They are literally "full of crap" depositing up to 2 pounds of feces on the ground and in the water, dirtying and degrading both. Canada geese can get very aggressive especially when they goslings.
Canada geese have few, if any natural predators so other steps have to be taken to deal with their growing numbers.