We had unsexed chicks, a mix of barred rocks, ameraucanas, wyandottes, and buff orpingtons. We therefore had about 50% roosters. We were planning to let the roosters get large before processing, and were considering keeping a couple of them. At almost 20 weeks we were getting no eggs, roosters were harrassing the hens relentlessly. Our chickens free range, and the hens just couldn't get any peace. The girls stopped wanting to go in the coop at night. Then, twice in a week, we found a dead hen in the coop - underneath the biggest rooster. That was the last straw. Three days ago we processed all but one rooster, "Chuck" who was the largest and calmest barred rock. We had beginner eggs the next day, more today. The girls happily go into the coop at night now (we have 8 hens now). I'll never keep more than one rooster again. Chuck is a good rooster, looking out for his girls and never rough with them.