My daughter and I would like to get a few ducks. We have a creek that runs through our property that has a really wide pool area. I have always thought it would be neat to have ducks swimming around. There have been wild ducks stop by but they never stay long. What would be a good duck for a first timer? Are some ducks hardier than others? Do ducks come back to their pen at night like chickens do? I am afraid if they don't, predators might get them. Also, do they need swimming water in the winter? I'm in northern Ohio, winters are terrible here. Any advice is greatly appreciated.