My drake has his own stall I'll get you measurements. At one time I had more than one drake so when we built our ducks house we had to go with stalls to keep the drakes from fighting and keeping everyone stressed out it has worked out great. At one time some of my females shared a stall but I...
Can you tell by looking who is missing feathers? someone maybe getting picked on. You might want to split your duck house and have drakes on one side and ducks on the other. My females get to have their nights with out the drake to hassle them.
He's def a keeper then. Some ducks do spring molt so you maybe seeing that. My Muscovy's go through their big molt in fall then seem to have small ones off an on through the rest of the year.
I made stalls inside my duck house so my females actually have their own bedrooms. They love having their own space and use them also for egg laying and brooding. I can show pics if you like. Ir you could separate your duck house down the middle put drakes on one side ducks on the other for the...