The end of March we are getting 26 chicks. 8 we are keeping and raising in our guest bedroom with a heat lamp/thermometer/95 F, etc. My wife's father is getting the other 18 and plans on raising them in his old milk house with a 100 watt heat lamp. The milk house is a stone block building, dry but damp and will be about 40 F on average for the end of March. My 1st question is what are their chances of making it with just a heat lamp in 40 F temps? Also should he get a 250 watt bulb instead? We are trying to convince him to just raise them in the house, but baby chickens are "dusty" is the reason we get. He also has experience raising chickens outside, but 200 brooded together with multiple heat lamps. Please let me know what you think, and raising all 26 in our guest bedroom isn't out of the question but he wants his own chicks. Thanks in advance for any advice.