I'm interested in adding a duck or maybe even a pair to my small backyard flock of chickens. I live in an urban neighborhood where roosters aren't allowed due to noise. I'm wondering whether there are any duck varieties beyond the Muscovy that won't be too noisy for where we live. Are there any other types of ducks generally known to be quieter than the average duck breed? I hope this isn't a dumb question; I just want to be sure that we do our homework thoroughly before making any decision. Thanks!