Good morning! So happy to have found BackYard Chickens! I know I am driving everyone around me crazy with all my chicken talk! lol! I have 7- 3 month old hens (Black Sex Links, Production Red, and Isa Brown), no eggs yet! Also 3 - 1 week old chicks (Ameraucanas). I bought a home that already has a beautiful Hen House and run. It's getting cold here in Michigan and I have gotten mixed advise for how warm to keep their coop. As of now I just have 1 heat lamp (it's secure) and was wondering if that is good enough or if they need to be kept warmer when it gets colder. The baby chicks are in the house for now. What are your thoughts?