Is it bad to have the heating pad for too long? My chicks have been outside since they were about 2 weeks old. They are 5 weeks old today and fully feathered. The pad has been at 2 for a bit now. But there are some night still predicted to be in the high 20s. They don't sleep under the cave, just all piled on it.
My 2015 batch were raised by a broody and were roosting at night on the 4' high roosts with the 3 Y/O hens at 4 weeks. They started moving themselves there from the nest box the broody moved them to at 2 weeks of age. Access to the nest boxes is via a "perch" at 18" high, then another 8" to the lip of the box. My guess is the 7 of them and the BIG BA hen got really tight so they started moving themselves up. I don't think yours need the cave at 5 weeks. BUT those girls were 4 weeks in early July so the night time temps weren't anywhere near freezing. I ASSUME they have access to the entire coop, they will decide when and where to sleep.
Love the Mama HP cave. MIne isn't so pretty, but functional. Just got new chicks and they took a little tweaking to get them to stay in the cave. Now everything is peachy. I raised the cave up about 1 inch and lowered the control on the heating pad to 5. I guess it is right for them, they have happy chirps and then silence from the cave every little bit. Then they come charging out to eat and drink. I love Chicken TV.
Chickens don't care about pretty

Given the temps in East Texas I've been seeing on the BYH forum, you could likely turn it down even more. But as was noted above, always let THEM tell you what to do. Too hot, they won't go in. Too cold, they won't come out. Acting like normal hen raised chicks, spending time both in and out - JUST RIGHT!
I'm missing the broody raising thing! The new girls will be 2 weeks old Monday. They are doing just dandy in the brooder area in the coop with their MHP but Zorra had the 2015 girls out in the run every day before they were even a week old. They only ate, drank and slept at night in the brooder area (until she tired of waiting for me to let them all out in the morning when the girls were 2 weeks old - see above). These little ones don't have a clue that they should want to get out and explore
