My Chicks are getting big. I need to know when I should put them outside in their coop? I'm in GA and it's about 75ish during the days and 60s at night. My chicks are about 3 & 4 weeks old. I'm new to this. They are starting to loose their baby feathers. I have been moving the lamp accordingly, but they still seem to sit out of the heat, so I'm trying to keep them comfortable. I currently have them inside in a makeshift brooder & have let them go outside once (supervised & contained).