There is a farm selling chicks very close to me. (Within 50 minutes) I want to get them my concern is leaving them out in the coop/shed with the others with the cold weather. They will have their own area. Is this just a bad time to get them? I could cover them and use a light. How carefull do I have to be? Can they go out if it is only in the 40s? Do I need some heat with it dipping down into the mid 20s at night? They are just about off the heatlamp.