I just lock the gate to the run and let them figure out where to sleep. We have some that sleep in the trees and some that sleep on top of the coop. The three that sleep on top of the coop often have frost on them in the morning. I don't worry about it though because they know better than I do whether they are cold enough to go inside or not. I know it's not a matter of space in the coop because we have 17 birds in a 4'x16 coop. I don't lock the coop since the run encloses it. I think your birds will be just fine without you tucking them in and talking to them until they go to sleep.