I have 13 pullets (only 12 are laying, did the "butt check"), they had 4 nest boxes...but, they only use 2 of them and largely ignore the other 2. That is until recently. They started pulling the fake eggs out and "playing soccer" with them! I pulled the fake eggs out and then, they started overturning the 2 unused nest boxes. I out fresh bedding in all the boxes, they dumped the 2 unused boxes that night. I pulled the unused boxes out day before yesterday, they didn't do any good sitting upside down in the middle of the coop anyway. Now...they're overturning the nest box that the majority of them use! What the heck?!? The 4th nest box is attached to the wall, they can't overturn that one, but this is getting a bit ridiculous. What can I do to stop the destruction? I do have another wall mounted nest box to get hung, it's on my "needs to get done today" list. But what the heck are they doing all of the sudden?