I have 6 ducks of various breeds that we bought at Rural King last year. They are a lot of fun to watch but they won't let you get any closer than a few feet. They move all day as one unit. We call them the duck mafia. Is this normal? There are 3 male and 3 female. Our last ducks had no problem with us. They thought they were chickens so they learned to let us get close like we do with the chickens. Just curious ....0