my chickens have all been free range, I recently built a coop and put them In it. I have eighteen hens and one rooster locked in the coup. All of a sudden a hen or two, or more, I don't know, sH ave scratched all the bedding out of the nesting boxes onto the floor of the coup. I had old hay in the nesting boxes before. I'm not sure what to do. I don't know if the nesting boxes need to be cleaned out with new hay put in them, which they have been bedded in hay for several years. Or whether they are freaked out because they are locked up..What do I need to do.