I know, I didn't explain it well. I really appreciate you helping me though! Here is the tractor. (old picture) It is 8x4. A tarp covers most of it, so it's pretty dark in the box. The big coop has a run that can be divided in case I need to separate chickens. The tractor can connect to the end of the run that is cut off with the dividing fence. I don't mind letting her do this, because I've never had one hatch chicks before. I don't expect much from it, but if she's offering, I'm going to let her do it. When I checked her today, she had 3 eggs and the 2 balls under her. So if I mover her tonight, I'll just take the half bucket she's in and secure it in the tractor's nest box.