Hey all!!! My layer babies are 7 weeks old today. They've been in the outside coop since week 4 with the heat lamp installed. It's running in the 50/60/70's during the daytime around here and I notice on the weather map it's calling for a low of 45 on Saturday night. How long do I need to keep the heat lamp in the coop? I only have it on at night time. I hate thinking of them being cold but my DH tells me that I've got to let go sometime! LOL Are they old enough to be ok in the lower temps? Thanks so much!