posted 11 years ago
I've never had any trouble getting my hens to brood, did have two of them over mother and kill 4 chicks on me last spring. (One would move to let them out of the nest, the other would jump in and keep them in the nest.)
Mine are Buff Orpingtons, Black Jersey Giants and, the resulting cross bred chickens. I don't separate nests, just leave one box I don't gather from and the hens brood those just fine.
What I do is pull the rooster to a separate pen once they go to sitting the eggs. Moving the hens is not a good idea, mine will quit laying for 1-3 days if I move them but, the rooster constantly wants to ride them so, once I have the fertile eggs I need for the year, I move him away from the hens to give them some peace from him.
You have the rooster and, good laying hens. If they won't brood, why not get an incubator and hatch them yourself? Not hard to do. I do that too, to get more chicks and, it works well.