We've decided to get a couple geese. We want them to become watch geese as dogs are not an option for us. We have several acres of grassland for them to forage as the horses have been sold. We have no desire to breed the geese. Would it be best to get 2 males, 2 females, one of each, or doesn't it matter? We're hoping they will be an early warning system in case another fox comes into the area. Would also appreciate suggestions for possible breeds.