I too did not like having the heat lamp on my babies all the time and used a radiant room space heater after about a week. We were brooding in the room I use to work from home. Was so nice working and being able to listen to them cheeping all day. Now that it's warmed up the 11 6-weekers are on their 2nd week completely occupying the run and coop. I have 6 3-weekers that come back in to the house at night. Been putting them out in the run in a dog play yard this week so everyone can get used to each other. The littles can go out and mingle, but they usually get chased back in to their space by the big girls.
The second day after the big girls went out to the coop/run we had snow and so I kept them in the coop the whole day. Worked out because the next day after all day in the run, at sunset they all put themselves to bed on their own and they've been doing it ever since. I haven't been brave enough to let them roam our yard outside the run yet. The yard isn't fenced and just last night we had to chase a stray cat away from the run. Would like to give them another month before we venture that. Although, I don't think there is going to be much grass left in our 19x10 run in a month, haha!
I have watched their bedtime shuffle in the coop a couple times and they try to pile on to a 2 ft section of roost that we added in the corner. About 7 can squeeze on there, for now, the other 4 sleep directly underneath on the main roost bar. The one brahma still tries to crawl under everyone else so they all get knocked off a couple times before she settles. Then one of the cinnamon queens always waits to last and jumps on top of everyone. LOL! Thanks for sharing! Your chicks are a bit ahead of mine, so kinda gives me a glimpse of what to expect.