I am beginning to think I have 4 girls, 1 Rouen and 3 Mallards. They are ALL very loud and from what I understand the males just aren't loud. They are over 3 months old now and while I don't see any sign of any molting on any of them, those loud quacks are a pretty good indication from what many of you have said. We were really hoping the Rouen was a drake. I have a friend with a Rouen drake, it actually might be my Rouen's brother, also just over 3 month's old....and he already looks like a drake. I am thinking of getting him and introducing him to the girls.....waddaya think? Am I looking at a blood bath or will they accept him.....eventually?