Hello, I am new here (and to raising chickens) and would like to ask some advice. I have 31 chicks in a brooder in the basment. 24 of them are just about 4 weeks old and space is getting tight! What I am wondering is if it will be safe for them to head out to the coop if I put up one or even two heat lamps, the overnight temp. is still dipping close to 0c (30's f.). I think they would be much happier with more space (and my sanity better not worrying about them flying all over and hurting themselves) but don't want to risk their good health. Oh, they are a mix of Buff Orpington and New Hampshire if that makes a difference at all.Thanks in advance for your help!