I have 5 chicks that are about 2 or so weeks old, still under a heat lamp. Also, I have a leghorn (I think) that is about a week to 2 weeks older than my chicks. Here is a picture taken last night: A friend of mine has 4 that she will be giving me on tuesday that are about the same age as my bigger one (not sure of her breed but they are all white). She has not used a heat lamp (not as careful as me i guess but her chicks survived). i don't have room for anymore inside but my coop is complete outside. I am in Georgia where the days average 70s-80s and the lows are high 50s at night. My question-is it ok to put the new chickens in the coop and get a heatlamp for the night? And when do I move my chicks in? This is my first time with chickens.