I have successfully integrated my new chick's to the adult flock. The problem is I used a kennel with a roosting bar in the chicken run to get the adults to recognize new chick's and do a proper quarantine. I need the new chick's to use the secure coop at night. For the last 3 nights I have hand carried each new chick and placed them on the roost in the coop. I have had to repeat this the last 3 nights. I live in Montana and they must be in coop for shelter due to harsh winters. What can I do to get them to go with the flock to the coop on their own?