All my chickens are in one coop tonight, of their own doing!! I had 7 three month olds housed in a small 4X8 coop. Both my larger coop and smaller connect to the same run. Over the last month I have been letting the younger ones out in the run while the older flock free ranges. Then I opened both coops to the run so everyone could come and go. Tyhe younger chicks started hanging out in the big coop when everyone was out during the day but they went back to the small coop at night. Tonight I went to close up and everyone was roosted in the larger coop. Yea!! I have lots of roosting areas and all the grown chickens have their favorite spots. The little guys just picked a spot that wasn't being used. We'll see how everyone is tomorrow. I have been worried about integration and getting the timing "right" and then they went and did it on their own.