It is going to get in the teens tonight, So when do you start putting heat in the coop? I got a heat lamp that I was thinking about putting out there. Got 13 RIR, 2 silkies and 2 EE. The last 4 are in a small coop by there selfs. I got the RIR in April and hatched eggs in Aug. for the last 4. By the way getting 11 eggs a day from 11 hens. By the way I put 100 watt bulb on timer about 3 weeks ago. They are doing great on the laying, I go out at 8 and they have them waiting for me. We had a snow storm last weekend and power went out. Guess what I found out yesterday?? I forgot to plug timer in. after power went out.