1st rule: Don't breed a mean rooster - I know (don't worry - all the cockerels will be food - I don't think you have to worry about the aggressive trait w/ hens). I have a semi-aggressive 5 month old Black Copper Maran that I want to breed over my maran hens for the dark eggs - probably in the December timeframe. My chickens free range - so I don't want him attacking the kids, our guests or my wife. I know there are plenty of roosters out there - but it is a hassle to go out and find a new one that is the breed I want - so if I can make the one I have work, i'd rather do it. Question: Is it feasible to put him in a quarantine pen (in sight of the girls) for 4 months and put him with the girls for a week or so when i want them to breed - then expire him? Not sure on breeding in that manner when he is not 'their' rooster integrated w/ the flock. Also - would he be rough with the girls since he has been separated for so long (thinking teenage hormones). Any suggestions on whether that is feasible?