My first broody sat on her eggs for 20 days, then they vanished. Now I have another hen that is broody, about 4 days in. My friend has some chickens that lay dark brown eggs that I like. I was going to get a few from him and incubate them. After they hatch, can I put them with my hen even if she already hatched her chicks? When a hen hatches chicks, does she take care of them or do you have to separate them?