All 31 chicks survived the night. I was in the coop 4 times checking the brooder....because I am nuts. They appears to like the temperature. My youngest was so excited to see them when we opened the door in the morning! They are all getting teeny feathers on their wings. He said, "Mom, they GREW". Lol
Update: we still have 31 healthy chicks. They are really starting to feather out on their wings! I just fed and watered them and changed their shavings. They were a bit nervous about that.