I have a flock of 36 week old hens and 1 rooster, I added another flock of mixed 16 week old birds, not yet sure of sex but think most are roosters. (I added them to flock at 8 weeks). I haven't noticed any problems yet, but wondered if I should anticipate any before I butcher the roos at 22 weeks. My hens are not laying like they were and not sure why, could be lots of reasons I guess, just thought maybe to many roosters could be part of it. ?????