I am thinking of trying to get 4-6 silkie hens and having them in a nursery coup. Then have them hatch fertile eggs that I will buy. I just need to know the hatch rate of eggs that are raised by a chicken. My goal is to hatch 20 hens a year so that means approx 40 chicks and will need to know how many eggs I would need. Then i would know if my 4-6 silkies would be able to do the job