I have a small pre-fab coop. Inside it has slots for 2 x 4's for a roost over a tray. They had been sleeping on the 2x4, I took the other out until they get bigger and need more room. It also has an attached nesting box which I put a spare piece of plywood up against it to block them from the box. I went to make sure everyone was secure and not "lost" (the little one tends to "lose" the bigger girls and then cries despite the fact the other ones are about 5 feet away) and I found them sleeping on the top edge of the plywood. It didnt fit all the way to the top of the coop and until today they have left it alone. I will fix this so they dont hurt themselves but my question is, should I move the 2 x 4 higher? I kind of thought that 4 - 5" up would be high enough but I guess not?