I have 2 drakes. One a Rouen Mix (believe with a runner) and a pure bred Rouen. The Rouen I got had a mate but she sadly got attacked about 2 months ago by a nasty feral cat. I have 3 pekins, and a mix rouen female. I had no problems with the 2 drakes for a year now, but my Rouen mix is now very violent with my Rouen chases him around the yard all day long! He didn't do this when the Rouen had his female Rouen mate at all! He left those 2 alone. Do you think adding 2 more Rouen females would balance them out or just make the aggression worse. I know its beginning breeding season and some aggression will be normal. Just wish his mate hadn't been killed it was fine then!