Yesterday I let my 8 chicks who will be 4 weeks old tomorrow out into their run from the coop, where they have been for 1 week (it is heated as needed). Last night, I and my husband were truly thinking that we would have to round each one up and put it back in the coop. However, much to our amazement, they put themselves to bed. They neatly lined up on the ramp and marched into the coop all on their very own. What good girls I have. And to make it even better they are all roosting on the roost bars!