Thank you for the suggestions on how to get just ONE hen to finish sitting on the pipping eggs. What I did was place a broody hen in a large plastic tub, with food, water & bedding, of course, then put the eggs in there and covered it with hardware cloth. I then placed that tub in a darkened area so she would settle down, which she did. Friday afternoon two chicks hatched. I'm not convinced this hen knows what to do with chicks, though. After I picked up the chicks to look at them, then put them back in with the hen, the hen tried to scoop them underneath her like she did the eggs. I've never seen a hen do that before. Until I'm confident that she will keep the chicks warm, I'll keep a close eye on them all to make sure.
Here's the mama with her babies hidden underneath.
Here are the two babies.
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They are adorable, and the part about her scooping them under her like she did the eggs is very normal. I hope you don't have to take them from her, hens do a much better job of raising their chicks than we do.