I have chicks that are just 10 days old...so if I am reading right..at about 3 weeks (as I turn down the heat light gradually)...I could put them in the coop with a light? It is still quite cold here at night...25-30F at night..50 in the day...as long as the coop is warm enough...will they be ok out there? I have sand on the floor of the coop...soon I will have 3 young laying hens..about 11 months old...how will they all get along..will the older ones mother the little ones? Any and all feedback is greatly welcome...I love you guys!