Ok I am 6 days away from the 21st day. My question is, when to go into lockdown and do I need to do this if I have a hen hatching these eggs? Will mamma hen help with the hatching? Will she still keep them warm or are they on their own right after they hatch? What about food and water? The nexting box is about 3 foot off the ground. Should I put them all into a smaller cage to protect the babies from the other hens? I have chain link and I know the babies can slip right over into the pens with the bigger girls. I have some chicken wire I can put around the bottom. Any help is appreciated.