I have 5 chicks that are 4 weeks old today. They are heaalthy & beautiful, but ready to be out of the brooder. (I think). They have most of their feathers. Only the necks look prickly. Our nights are only around 35 degrees, so I'm worried. But since I'm in SC they should really be warming up soon. I have full grown chickens outside who are fine with the temp, I do not have the option of hanging my heat lamp outside, I do not have an enclosed coop. What do you guys think?