We added a rooster to our 7 hens a few months after they started laying eggs. Just in the past few days, one of the hens started sleeping in the nest box, something that none of them has ever done before. There are 2 eggs in the box, and many of her feathers (also not noticed before). How long should I leave them in there? Last night was the first night that she didn't go to the roost, she spent the night in the box, but she didn't spend most of the day in there. After free ranging with the girls for most of the day, she went back to the box again tonight. Don't know if I should leave the eggs for her to hatch, or just pick them up... We are in upstate NY, and it has not been very cold lately, but the weather is changing and going down in the 20s at night. If the eggs get cold during the day, should I pick them up and just assume that she is not sitting on them?