I have 9 hens, all laying daily. They have six very nice nests, all dark, clean and cozy. Most of the time all 9 lay in one nest, sometimes breaking an egg already there. A couple of times I found 6 eggs laid over next to a tree outside the coop (free rangers). I picked up the eggs by the tree and put a log there so they couldn't repeat that spot. However, they stand in line waiting for that one nest to be freed up, when there are 6 very nice nests right there in a row. What gives with these girls? How do I get them to use all of the nests and not just stand there waiting for the one, or worse yet, go outside and lay?