I have a 5wk old sussex along with 3 3wk old orpingtons in a coop outdoors next to my adult coop. The chick coop doesn't have a heat lamp because our Temps were steady at 63day and 50-55night. But we are getting a cold chill and Temps will be at 56day and 35-40night. My wife and I have been bringing the chicks in at night then taking them back out in the mornings.is this starting the introduction all over again with my adults? We have had our hens hatch most of our chickens. But these new 4 have been purchased from a hatchery. Coop is insulated more than you can imagine, and is off the ground so the cold ground Temps don't take effect.