Hi There, we hatched one chick yesterday and then got him 4 friends today. They are in our basement, in a brooder, surrounded by visquine and covered with blankets. I have a shop lamp with 100 watt bulb in it. They seem to be doing well, napping, eating, not huddling. I am not sure my thermometer is showing the right temp. What can I do to make sure that they are warm enough?