About 5 weeks ago one of my Buff Orpingtons started setting in a nest box all the time. If I moved her she just sat on the floor and moved the litter that was around her and then went back to the next box. After two weeks of this I said ok and moved her with 3 eggs I had collected to an area by herself. She then laid one more egg. So now it has been almost 21 days (21 days is Nov.1 going by the day I gave her the eggs). Question: How do I know if and when they will hatch? All my hens have a rooster with them so the eggs should be fertile. Question: Do hens get diarrhea when setting? She has gotten off the nest twice over the last few days (that I have seen) walked a little way and pooped. I can hear her go and it is greenish-brown and smells bad. Today she didn't want to go back with the eggs but when I put her by them she set back on them.