I must be REALLY cruel. LOL I put my fully feathered five week olds in my barn with no heat. It even dropped to the 20's (F). They were fine and it was probably 30ish in the barn. Roosting, not even huddled. Then again, they were brooded in an ecoglow, not a heat lamp. Just taper the heat down a little and they'll be ok soon with no heat at all.
