Well, you could keep any type of duck, actually. Muscoveys usually do not swim as much as most ducks, because their oil glands aren't as developed, and call ducks are small, and would do better in a pool, but really, any duck will make due with a swimming pool (kiddie pool) if no pond is available.
currently I have 24 ducks (was 26 - minus two since yesterday
) and I have no pond at the moment. I am hoping to put one in, but even if I don't they'll have a swimming pool to swim in. (21 of the ducks are babies still, and inside the house)
I had hoped to free range them on the farm, but now I am wondering whether I should put them in a pen, or put the dog in a pen. My dog killed two of my ducks yesterday. He loves chickens, wouldn't dream of harming a feather on them - but ducks are just different, I guess, and he saw them as prey.
I have pics of him laying asleep amidst the chickens, and pics of the chickens stealing food out of his mouth - I never dreamed he would kill the ducks. I guess I was wrong.
meri