I've incubated 15 eggs for 18 days now, and I'm going to put them tonight under my 3 broody silkies/cochins (whose fertile eggs did not develop) to hatch, so they can raise them. Each hen will have 5 eggs. Each is now on 5 round stones. I've never had 3 moms at once before. Can any of these moms share the same space the first week? I have a 15 s.f. aviary area attached to my run, and one broody has her own brooding pen. Thought I would move two of them to 2 portable 12x12x18 D nest boxes within the aviary. They get along in general. Will this work? If not, at what age can they start sharing, or do they have to stop sharing? They're not likely to attack each other's chicks if each has her own nest box, separate food & water dishes at opposite ends, right?