I brooded 30 chicks entirely in their coop. I call my coop, Coop Cost A Plenty! Anyway...I can’t get them to sleep on the perches. I’ve put food up there and on the ramp. They are only three feet above the floor...they fly up, eat the food, then fly down. They sleep in a big pile on the floor! Any ideas? They are 8 was.old now.