So tonight is their first night out in the coop. They are 2 heavily feathered light brahmas and 1 black australorp. Now that it's dark outside, I'm having second thoughts and am kind of nervous. If only I had purchased a baby monitor! The temp will drop to 61 tonight. Is that too cold? They have been without a heat lamp (indoors) since they were two weeks old (they are now between 6 - 7 weeks) and the brooder temperature has dropped at night in the un-heated sun room. Should I try to set up the heat lamp tonight or will they be fine? I'm one nervous chicken mama.