My muscovy has been laying for about 2.5 weeks now. I built her a little shelter and she set up shop there. One problem I have been having since she is not setting yet is some of my chickens have dediced that it is a great place to lay their eggs. Since my muscovy isn't setting, I just check the nest and remove any chicken eggs. No big deal, I thought. This morning, there were some feathers in the nest so I am thinking that she may have started plucking and may set soon. Later on, I was outside building a holding pen for some meat chicks and started wondering where my girl was because my drake kept coming over to see what I was doing. I went to check if she was in the nest and she was but my brown leghorn was standing there pecking her in the head. I removed the hen and closed up the duck run. My poor scovy had a little blood on the top of her head and behind on e of her eyes. She is not too keen on me touching her so I kept an eye on her and she looks okay. She stayed on the nest for a few hours today and when I noticed her pacing I let her out of the run. I have had problems with this leghorn hen before, she used to pick on the muscovy when they were younger and they are scared of her. Suggestions for what I should do to resolve this situation? I don't want to leave the ducks in their run all the time, maybe once she starts to set but not yet.