Your chicks are arriving in a couple of hours and you are making your final walk-through to make sure that everything is ready. You notice a light bulb is burned out so you grab a replacement bulb and a ladder. As you climb the ladder you notice the air near the ceiling is surprisingly hot (+100oF). You quickly replace the bulb so you can get back on the floor and the relative comfort of the 85 - 90oF air. But consider this, when you get off the ladder you are sensing the air temperature at a he...ight of about five feet off the floor, not at floor level. There can be just as big a difference in air temperature between five feet off the floor and the temperature of the air right next to the floor as there is between five feet off the floor and the ceiling.