My Muscovy Drake had one female Rouen that he absolutely would not stop mating. All hours of the day and night. I ended up putting him in Drake jail. The Mallard/Rouen Drake stuck mostly to the Mallards and the one Khaki Campbell hen. The Khaki Campbell Drake went after anyone he could catch so he went on down the road to another home. They are all different and some people can have a one on one and other drakes will abuse the hen. The Mallard Drake and Muscovy had been in Drake jail almost all summer. It is still hot here in Ohio so I figure maybe in October I can pardon them. lol