A few of my chickens just started laying about 3 weeks ago. I have ten hens in my flock and three are now laying. My hens are sleeping in the nesting boxes. I have two coops attached to a penned area. Each coop has two nesting boxes and two perches. How do I stop them from sleeping in the boxes? Do I have enough boxes for ten hens? I have already found a crushed egg in a nest yesterday.