What does everyone use to keep their button quail warm enough? I currently have a heat lamp on top of my cage but at night when they actually need the heat I imagine they, and definitely I, would much rather have it off. Last night I ran my space heater (and put blankets over my windows which don't quite close), but I am not used to my room being warm and found it a bit difficult to sleep (was trying to keep the room at about 65 but it kept sneaking up to 70+, then when I set the heater for 60 it would drop into the low 50s.) So I am wondering- is it possible to use a heat pad or hot rock of some sort under part of the cage/sand or what?