i put my 20 banty chicks in a large brooder last night. right before bed i moved the heat lamp a bit colser because they were hudled together under it. this morning they were still hudled together under it but some of them were painting as if they were hot. why wouldn't they move away from the heat lamp if they were hot? i moved the light away a little bit and they spread out some. i put the heat lamp at one end of the brooder so that they could move away from the heat if they were hot or closer if they were cold. would using a red light make any diffrance?