These chicks are 5 weeks old, and currently in my garage with a heat lamp on them. Sometimes they are next to the light, sometimes they are not. The temps are going to be in the low 50s at night, and up in the 60s and 70s during the day. They will still be in this large cage, but inside the chicken coop where the other hens can see them. I have no electricity in the coop, so I cannot keep a light on them. Thoughts?