My rouen female just started laying, I cant try to hatch now because I have khaki campbell eggs in my incubator now that are to far ahead, but when they are done, can I try to hatch out a few of her? Or will it be two hard? Any thought on this? Thanks! Oh and I know they are fertile because I pened her up with my rouen drake so the babbies would be pure bred rouen. Oh 1 more thing, how long do they need to ne laying to hatch their eggs?