I kicked my babies out into a larger frankenbrooder in my garage yesterday evening. Their room had been in the 55 - 60 degree range and it was 45 degrees when i put them in the garage. They were fine for several hours, but as soon as I turned the light off (I put a nightlight over the top so there is still a little light) they began chirping loudly. Logically I knew it was just that they were in a new place, but illogically I couldn't talk myself out of them being cold. So I moved a space heater into the garage (which then sent my worry stricken brain into thoughts of fire). I checked on them several times last night and they had quieted down and were fine. When the lights went back on this morning they were stretching and moving around acting fine. Woo hoo! My office can get a couple weeks break before the new batch of littles arrive! The marans really needed more space, so I had to get them out and I think they will be fine
Your frankenbrooder cracks me up! We started with a 48" crate, then created an extension that was 3x6 using some old picket fencing and some hardware cloth. It was NOT pretty especially when we wrapped it all in cardboard, but it did the job for 4 months while the coop was being built..just ugly.