So I bought new Muscovy duck today for my male as he was giving the other "female" (Muscovy x Indian runner) a hard time along with my chickens, trying to mate all the time. So when I let the new girl loose, as soon as they saw her they BOTH mounted her and now I feel I must have had two males and have added a female. I'm thinking I'm going to have to get rid of the big black dominant drake as he is trying to mate with my chickens and now it seems has been trying to mate with my other male duck. Could all this be true? Do drakes try and mate with other drakes or could the female just be mounting her for dominance? See the photos attached. It is two ducks on top of the new female Muscovy.