Yesterday we got four chicks from Wilco Farm Store. They are in a brooder with solid sides, in the house for now. We have a rabbit screen lid and 125 watt heat lamp on them. The temp never seems above 85, and I don't know how old these chicks are, either, so I am a little concerned about the Temperature. They have two or three rows of wing feathers and the two sex link chicks have tiny tail feathers sprouting. The other two are Barnnevelders and while the same size, have fewer feathers. They eat, drink and eliminate what my books say is normal, and will move about when awake and not eating or drinking. Any ideas? Do I need to up the heat lamp to the 250 watt variety?