Ron, a couple of things I meant to add about the hen raising the chicks….first is that I haven't had a lot of success letting hens hatch their own eggs. Partly that is that I want to focus on certain breeds and don't want the hens hatching any old egg because then I'll just end up with a bunch of mutts. But mostly its because they typically go broody in a nest box and usually aren't that crazy about the idea of moving. In their heads, they already picked the perfect spot to brood and what do we know about it anyway? So there they sit in the prime nest box and the other hens have to squeeze in with them everyday to lay their eggs. Even if I mark the eggs so that I only gather the new eggs laid that day and leave the ones she's supposed to be sitting on, in the course of 21 days, the eggs she's trying to hatch risk being cracked and broken by all the activity. Or, a hen jumps in there with dirty feet and contaminates the eggs and they turn rotten. In the unlikely event she is actually able to hatch them, there's a good chance chicks will fall out of the nest box while stumbling around after first hatching, and the hen will keep sitting and let them fend for themselves which can have bad results. Chickens are not always that tolerant of a baby on its own.
So - although I said I let my hens raise chicks in the flock, what I do is let them brood wherever they want to but I collect all the eggs every day. Meanwhile, I incubate the eggs I want hatched in my incubator. When the eggs have pipped - or sometimes after the chick has hatched - I move the hen to a small broody pen (I have several just for this purpose). I move her after dark, make her a nest, put her on it with either the pipped eggs or the chicks and by the morning she has almost always accepted the chicks as her own. I leave them there for the first week as it takes a little time for the chicks to bond with their mother and recognize her voice over those of the rest of the flock. The broody pens are on one level so the chicks can't fall out of anywhere and get lost, and it makes it easy to give them access to food and water as well. Once the new family is established, then I let them out of the broody pen to join the flock.
So - although I said I let my hens raise chicks in the flock, what I do is let them brood wherever they want to but I collect all the eggs every day. Meanwhile, I incubate the eggs I want hatched in my incubator. When the eggs have pipped - or sometimes after the chick has hatched - I move the hen to a small broody pen (I have several just for this purpose). I move her after dark, make her a nest, put her on it with either the pipped eggs or the chicks and by the morning she has almost always accepted the chicks as her own. I leave them there for the first week as it takes a little time for the chicks to bond with their mother and recognize her voice over those of the rest of the flock. The broody pens are on one level so the chicks can't fall out of anywhere and get lost, and it makes it easy to give them access to food and water as well. Once the new family is established, then I let them out of the broody pen to join the flock.