I just finished my lovely new chicken coop and run yesterday. Today was "Moving In Day" for the little ones and they seem to be enjoying their new digs thus far. My only concern is that they haven't quite connected the coop as their little cozy resting place just yet. I came home late this evening to find them all huddled together underneath the coop. Is there a good way to get them to start using the actual coop instead of simply chilling out on the ground in the run?