I recently purchased three 12 week old pullets. They get along fabulously, but they wont sleep on their roost. They sleep huddled in the corner. Usually two on top of one another and the third on top of the watered. I try moving them back to the roost and they keep going back to the corner. Should I leave them alone and they will work it out or keep trying to move them to the roost. My poor white leghorn wakes up with a dirty head from being pooped on because shes at the bottom.