I have a year old hen that is sitting for her first time. My other hens still want to lay their eggs in the same box as well. I only have three hens laying right now.If I mark the eggs that have been in there with her will she continue to sit. She gets very upset when you mess with the eggs I am thinking just leave her and them alone until they hatch and get rid of the other ones. Anyone have any thoughts what I should do.