I've also made a roost bar for them when they were just a month old. It is about three inches high and most want to get on it. I made it out of scrap 2x4 and used a real branch as the bar. Then I added another scrap wood for an alternative roost.
I had the same question! I moved them to a beautiful spacious coop and they all huddled in a corner in a pile. I tried putting them on and they would flap off and run away.My flock is about two months give or take. They are outside in the big girl coop and have been for a few weeks now. They have a roost that I have seen them on during the day, hoping on hanging out for a short time then hoping down.
But.... every night I go out to make sure they are in the coop,as I leave the door open to the run, and without fail they are huddled up on the floor somewhere.
I had a 250 watt light out there up until yesterday when my cozy coop heater arrived. To entice them to the roost I put the cozy coop heater next to it.
I just went out to check like usual, huddled on the floor. Away from the heater.
Omg I know....now. It seemed more appropriate when they were smaller. Never having chickens before I have no spacial sense of really anything hahaYour roost bar is too close to the wall.