I have 2 one year old ducks. 1 female- light tan color(breed?) &1 male- Pekin. We started with 5 but lost 3 of them in August of last year. Around February we got 7 more ducks (3 pekin and 4 rouen) in hopes that we could get more females. There pens are separated, but side by side so they can see each other, but everytime we let them out together, our 1 year old pekin goes after the rouen ducks. He NEVER pays any attention to the other pekins. I can't leave them unsupervised for fear he will kill them. One of the female rouen already has a bald head from where he has pulled out her feathers. When I let them all out together I have to stand nearby and keep him away from her. Most of the time i keep the younger ones locked up, and let the older ducks free range, but now they won't even go down to the pond. The sit right beside the fence near the young ducks. I desperately need suggestions on how to help with live together peacefully. Or maybe I am being to over protective and need to let nature runs it course?? Thanks in advance!