My FIL free ranges his Muscovies. Always has and that is why we restocked. Just his way. However, I must say that I don't see the Drakes fighting like described. We have three I think of the total 11 ducks. They have broken up in groups and they pretty much stick to their own groups until feeding time morning and night. I see them more in the evening feeding time and they have discussions like a group of people getting together to gossip. It is quite comical really, but no actually fighting. They have two huge stock tanks (ponds really) to enjoy and a couple of barns. Some sleep on top of the barns, some on my house and some on my FIL house. I don't remember in all my years of living here of the drakes in the past fighting. I do remember one drake that we had to put down for aggression. It was people aggression though and my MIL was running scared.