You should build them a heat pad cave. It's simply some wire fencing bowed over to make an upside-down "U" just tall enough for the chicks to get under. Put the heat pad on top of the wire, and cover it with a towel. It's a good idea to put something waterproof over the towel to keep it from getting soiled, but that's optional in an emergency. Put some straw or shavings over the towel, and you're set.Went to check on them and they seemed cold, I put two towels over the cat carrier. It's 46 out there now so I'm going to get my heating pad and put it out there for them, anyone see any issues with that or should it be ok?