Remember my pictures of our chickens stuffed into a couple of nest boxes. They sat on them for weeks on end. Well we decided they had to be physically removed or they would end up dying in there. Most of the eggs had broken anyway. They weren't very happy about having to vacate the nest boxes. I had to keep the door shut so they wouldn't go back in to sit on them again. They puffed their feathers all up, looked just like mini-turkeys and stood right by the coop door. It took them days and days to get over it. In fact one is still trying to hatch some eggs. The only problem is we take the eggs out every day and usually she's sitting in an empty box. Funny girls!