We've been using wood chips in the nest boxes for a couple of years. We tried straw, but they kicked it all on the floor and laid their eggs in empty boxes. Well, last weekend we cleaned out the coops and put new wood chips in the nest boxes. DH brought a new straw bale out to the coop, and we spread part of it on the floor. He stacked the remainder of the straw in a corner. A couple of days later I noticed that there were perfectly round straw nests in each box. I wondered why DH had put it there until yesterday when he asked ME why I put straw in the nest boxes. Since neither of us did it, and nobody else has been in the coop since last weekend, we can only assume that the girls plucked the straw from the corner and made their own nests! Has anybody else had something like this happen? Maybe they're trying to tell us something.