My 1-2 week old chicks were doing fine in their brooder and sleeping under the MHP every night. Yesterday I moved them to a new, much larger brooder and when I just went up to check on them, none of them had spent the night under the MHP - 5 were cuddled up together in one corner (which is closest to the heater I have in the room because that room tends to get chilled), and one solo chick was sleeping on top of the towel that's on top of the heating pad. What's wrong? I'm guessing either the heating pad isn't warm enough, or its actually too warm at this point? Not sure, but I'm afraid that they'll get a chill if they don't have enough heat, and I already have two of my 6 chicks who have questionable health and might not make it. Thoughts on how to fix this issue?