I have a large chicken pen with about 5 hens & 1 rooster. Last year I lost almost all of my new chicks. Some I found dead, some I never found at all.
This year, I have let the hens go broody in whichever nest box they chose too in the community pen. I kept an eye on the eggs, and once they began to hatch, I moved them to a smaller, more secure pen. (I converted an old petstore bird cage into pods. They were the kind that was stacked and each cage was split up. I removed the separations, and cut them apart from one another. Added nest boxes, and placed hay underneath the cage because I suspect that some chicks died from being smothered under straw when the hen scratched. The neat thing is that since they were bird cages, they already had little areas for food & water dishes, with doors so I could tend to them with out getting myself flogged.)
I first took the eggs and placed them in the new nest, then came back and got the hen. As soon as she saw the nest, she went straight to it and sat on the nest.
By the next day I had 11 new chicks from two hens! And they are all still doing well. I moved all the chicks in with one hen, and put the other back in the community pen.
The hen with all the chicks takes care of them and keeps them warm & teaches them to eat & drink, and the other hen went broody again as soon as she got about 10 eggs.