Hi, I am interested in getting some ducks but I don't know a whole lot about them. My questions are: 1. Can they eat chicken feed? I feed my chickens Dumor layer crumbles, would that work for ducks? 2. I have a pond in my backyard and I have been told that if I let them free-range all day, they will be miserable if they are locked up at night. Do ducks go back to the same place at night? I know they don't roost like chickens. I've been told that they will sleep under the dock (the pond has a small dock and part of the "bridge" part is over land) and if something tries to attack them they'll go into the water and be safe. 3. Will duck "byproducts" or the ducks themselves hurt my fish? I have some young Koi fish in the pond. I'm not too worried about this because my friend's family had ducks in their pond along with Koi (she doesn't remember how the ducks were kept because she was a small child at the time). I am willing to make a small coop/house for them at night. I don't really think that leaving them outside all night is a good idea because if a coyote or a stray dog or something went after them they might get confused and go the other way away from the pond. I don't want to have to catch them every night in the dark to put them up. Also, if this helps, I would be getting four to six ducks, most likely Blue Swedish. Thanks in advance for any information!