I am waiting for our girls to start laying. They are 21 weeks on Sunday. I have put a 5 gallon bucket on its side mounted to the inside of their coop. I put shavings in there and a wooden egg. But, every day when I let them out, one of the girls has been in the 'box' and pulled out some of the shavings and the egg is sitting on the floor of their coop. What does this possibly mean?