I have 16 hens. 5 of them are the youngest and just started laying eggs. They lay their eggs in the coop but at night they insist on sleeping outside. Outside the coop they are in a critter proof enclosure but its not completely out of the weather elements. I've tried to put them in the coop only to have them come right back out and this is at night in the dark. Is there anything I can do? The problem is winter is on its way and they need to be inside. Most nights I don't have to close their little door they get in from, so I need to get these 5 hens to go in on their own to get out of the weather. Just not sure what to do. And during the day they are not being bullied by the other hens so that shouldn't be a factor.