I have 3 Black Astrolop who are due to start laying in the next couple of weeks. We just finished their coop and moved them in 2 nights ago. This morning I opened the nesting box to find it full of poop. They have a roost, and it is higher then the nesting boxes, but they don't seem to be using it. I don't want poopy eggs, Any suggestions as to how to encourage them to use the roost or why they don't seem to like it?