So, I was looking and looking for a red heat lamp that is less than 250 watts. It's warm at night here, and in a smaller brooder, or with few chicks, the big red bulb is certainly overkill. Could be literally. The regular light bulbs kept them up all night. Checked feed stores, hardware stores, big box home centers. No dice. Then I went to the pet supply store to get some cat food and WELL DUH! Reptile bulbs. They had them in 40, 60, 75, 100, 150 and 200 watt. Worst thing is, I KNEW about these, I've raised reptiles in the past, worked in pet supply stores. When I tell the youngsters that I've forgotten more about <insert subject matter here> than they will ever know, I'm speaking literally these days. I bought a 75 watt red bulb with a shatterproof coating (nice feature!) for about the same price as the big ones at the feed store. It's perfect for my few guineas out in the mudroom brooder. They also have ceramic heaters that screw into a porcelain socket just like a light bulb. These are spendy, but they last forever -- good choice if you brood a lot.