Hi My dd (9 yrs old) is a chicken fanatic. I finally broke down and bought two little chicks this spring. They are now 7 weeks old, and the apple of our eye! They have been spending most days outside since about 2 weeks, but we bring them inside every night. Night temperatures now range from 40 to 60. Since there are only two of them, I wonder if 40-50 is too cold for them to be outside without a heat source. Thank You