My hatch rates are terrible, pathetic even 1/6 of eggs hatch when I tested a while ago, I'm testing with a broody now, and I even have to purchase fertile eggs. I'm thinking of adding a new rooster to the flock to increase the hatch rates, but I'm worried about fighting. Should I inctroduce a rooster slowly or not at all? Could I seperate the flock, so Ican see if the new rooster will 'service' the hens more?