My newest additions to my flock are six weeks old now,. I have introduced them , and they seem to have intergrated well . But at bed time I'm having problems getting the new additions to go into the coop . The older birds might be putting them off , so I put in an alternative coop for them . Still they wont go to bed volunterairly. This evening I left them out in a safe pen with the coop open . Will they go in on their own or are they in for a chilly night ???