Mine are in an 8x16and both hens set and hatched.The only problem is the hens kept trying to keep all chicks to themselves.I enjoy watching parents raise their owns chicks.Like I said earlier your pens need to be bomb proof,because if there's one little hole,the little buggers will find it...
My 2 hens both set and hatched chicks with male in with them.The only problem is the chicks find holes and disappear.If your pens are bomb proof,I would let the hens raise their chicks.it is much easier then having to brood them yourself.
In N.H.,Tony.