Personally, we mark the eggs we want to hatch, check daily to see if there are any additional eggs under momma and then let nature take its course. We let the broody hen remain in whichever nesting box she chooses. We have moved a broody hen to a different box before, but often had to relocate her a few times a day. At day 18 or 19 we move the broody and her clutch to a larger, private area. Three days after hatching, they all go to our bigger chick enclosure with momma. In our experience, if all the eggs don't hatch within three days, momma abandons the unhatched eggs. Those get moved to an incubator for another week, just in case. At about 4 - 6 weeks, they are out and free-ranging with the rest of the flock. The first pic is the community chick enclosure. The second is momma's private spot until the chicks are three days old.
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