In practice for the arrival of my chicks I have been adjusting the brooder lamp trying to zero in on the recommended 95 degree starting temperature. Started out with a heat lamp and found out that was going to be too much for them. Then I tried several different light bulbs ranging from 40 to 100 watts. Finally settled on the 40 watt bulb because the thermometer settled out at about 95 degrees and remained constant. My chicks arrived Thursday morning and I kept an eye on them and how they were reacting to the light. They acted as though they were always cold being all huddled up in such a small group. I really wanted to put the heat lamp back in but was afraid they would cook due to not being able to get the heat source far enough away from them in the brooder. Then it hit me, I went to the local Lowe's store and bought an inline dimmer switch and put the heat lamp on that. Now I can adjust the power going to the heat lamp and get the correct setting for my girls to be comfortable just with the slide of a button. No more bunching up of the girls, they look happy now. If this has been mentioned before I apolgize, but I've been reading this forum for about a year and a half and have never seen it mentioned before. Chicken_D PS - almost finish with the coop and will post later with a lot of pictures from start to finish. But for now I need to be working on the coop and not on the forum.