I have a small flock of 12 chickens. They are about 4 months old. I have a roost for them in their coop that is about 3-3 1/2 feet off the floor, but they don't use it. Instead they like to roost on top of a set of nesting boxes that have a flat top. The top of the nesting boxes is probably about 2-2 1/2 feet off the floor. I have gone in during the evening and moved them to the roost I'd like them to be on but as soon as I turn my back they jump down and move to the top of the nesting box. Should I care about this? Or just let them do what they want?