First timer with chickens. I'm in LOVE! Anyway, I have 3. 1 Buff Orpington, 1 RIR, 1 Ameraucana. They are 6 weeks old, fully feathered. They started in a brooder, then moved to the garage. They did great without the heat lamp in the garage last week. It got to be about 85 degrees during the day so we moved the coop outside yesterday and this is their second night out there. Problem? They scream unless they have the heat lamp on them out there. Can't tell if they are stressed by the move, don't like the dark, or if they are just cold. Currently it gets to be about 45 at night. We live on the Central California Coast. Are they too young to be out there without a heat lamp? Am I suppose to be "training" them to live without the heat lamp, or should I baby them a little longer?