A very basic question. I'm getting my first chicks (15) at the end of September. I have a 7x8 ft coop that does not have any other chickens in it. Can I just put up a heatlamp in a corner and call it a brooder? Or do they need some other kind of enclosure? I thought I should probably cordon off a 4x4 section of the coop, at least for the first couple of weeks. At which age would they be safe to explore the entire coop? hope someone can help me so that I can prepare a suitable welcome for the fuzzybutts. TIA.