The chicks were just fine in the house until they passed 5 weeks. Somehow, this last week they smelled more and made more noise. Then, yesterday, they figured out how to remove the cover on the brooder and were starting to get out and explore! I stopped with the heat lamp about a week ago and the house routinely gets below 70 at night. I figured since outside temps were now in the mid 60's at night, they would be fine in the coop with the windows closed. They were pretty scared when I first put them in there - crowded around me, but then some noticed the late afternoon sun streaming through the window and the urge for a sunbath overcame the nervousness for a while. I left them for a while to deal with a training session for one of the horses, then went back to the coop with their afternoon treat (scrambled eggs, oats and yogurt). At first, they bolted when I opened the door, but as soon as they heard the "chick chick chick treat!" call, they swarmed me as usual. I'm pretty sure they slept in a pile last night as the new roosts don't have any poop on them yet as of this morning. I also am sure they are LOVING the more space! The run should be finished in a day or so and we should be opening the pop door this weekend. I wonder how long they're going to stare at the open door before someone gets brave enough to come outside?!