I have 9 female RIR's. They are about 16 weeks old. I will soon be acquiring a rooster ~ not yet sure how old he will be. I know I should keep them separate but in sight of each other for a while. But how long? And any advice for this transition would be greatly appreciated. This will be my first rooster experience. I originally did not intend to have a rooster so as to not irritate neighbors with his noise. But now that I have my flock one of my neighbors loves them so much and is longing for *me* to have a rooster, lol so he can hear it crow! So he is actually getting me a rooster! I want to make this transition as easy as possible for my girls.