Hi! This is my first experience with chickens. Our first batch of 12 just started laying. I had ordered others that came later and they are now about 10 weeks old and outgrew the brooder. We integrated through a fence and have now put the smaller ones in the coop with the older ones. The younger group does not go into the coop at night or come out on their own in the morning (I have an automatic door). They have their own roosting bar and area in the coop, I'm just not sure what I can do to get them to go in and come out with the others. Any advice is greatly appreciated. Thanks in advance!