Another option is a Sweeter Heater (www.sweeterheater.com), which is a thermal panel that the chicks go under when they need to heat up. In concept, it's similar to the heating pad setup. It doesn't get hot enough to cause burns or start a fire, and it uses far less electricity than a heat lamp bulb. For a larger number of chicks, it may be more versatile than the heating pad, as it may provide more space underneath as they grow. I've used an 11x30" overhead mount panel in my coop, as I was sick of worrying about the risk of fire due to a falling, exploding or defective heat lamp. I've seen too many reports on BYC of coop and barn fires caused by heat lamps.