I'd get more if their Muscovies if your set on that breed. I've kept them in the past and found them very rough with the ducks. The drake wouldn't leave a duck alone and when indoors one night cut all her back and caused some nerve damage and we had to cull her. Shortly followed by him. I don't know if its becuase their feet are designed for roosting and their sharp, but the other ducks have never had the same issue