I know people come on here all the time to ask this question. But I'm not sure. My chicks are almost 4 weeks old. The two brown leghorns look completely feathered, but the americaunas and buff orphingtons still have a little bit of fluff. They're starting to stink in the brooder, and I'm getting tired of cleaning it every day. The temperatures here are around 80 during the day and mid-50s at night. Can I move them to their coop? I can run a cord and move the heat lamp out there if I need to.