I have 3 hens that share one nest box. They have been laying for about 6 mths. Never had a broken egg until two weeks ago. Now almost everyday at least one is broken and the box is all scratched up and the eggs sometimes are buried under the mess of pine shavings!!! What could be going on? Could it be the rooster getting in there and tearing it up? But I have seen him neatly fluffing it for the girls. The only thing that has changed is I have not been letting the flock free range anymore. Well I just connected thier 9x12 pen to a fenced 1/2 acre for more room. Maybe they got board? Anyone experienced this?