I just made some new nest boxes,nicely painted like a barn,and they keep kicking out the bedding from it. They kick it out and peck through it like they are looking for food. They will lay on it after making a nest from the straw, but afterwards,kick it out. I put the bale under a tarp where they hang out (tarp is on legs,10 ft tall) and they're tearing it apart. It's like a big chicken party with straw confetti! Why do they do this,can I get them to stop?