O.K. my hen house is insulated, the drafts are plugged and caulked, I have weather stripping on the doors and it's full of pine shavings and straw. I put a remote thermometer in it last night and the temp went down to 40! I have 8-4 month old Silkies(5 are roosters...in case anyone is looking for some) and my house is 4'x4'x4'. Why is it so cold in there? I thought it would be toasty warm. I don't think they will survive my lovely Michigan winter! Has anyone used a Ceramic Infrared Heat Emitter? My only concern is that it could start the straw or pine shavings on fire. Any ideas on what else to do?