I have had a few people tell me, that if I want my hens to lay eggs, i cannot have a rooster with them! I thought they were nuts at first, but I keep hearing this advice, and my chickens, who range in age from 18-22 weeks are not laying yet. We have a BR roo who is very sweet to them, not an aggressive rooster at all. Is there any truth to this whole rooster with your girls = no eggs? Thanks for your advice!!