I kept my chicks in the house the first night to make sure they were eating, drinking and going under the heat pad cave (search mama heat pad and/or mhp). The coldest we've had here has been high 30's at night. I placed the brooder box in the garden shed we are converting into a coop. During the day they are outside in a tractor to protect them from hawks and cats. I let them free range, outside of the tractor for at least an hour in the morning and an hour in the evening before going into the brooder that is in the shed. The brooder is a very large kennel for dogs. I have bedding (wood shavings), the mam heat pade cave (no longer on at night just there as a huddle area if they get cold) and there are roosting bars in there too. Tomorrow we will finish the transforming the shed into a coop. I will leave the mama heat pad cave in case the younger ones want to go in and huddle, then let them out into their run in the mornings. Let them free range as usual and into the coop before dark.
I have
4 buff orpingtons
3 Easter Eggers
2 silver laced wyandottes
2 barred rocks
2 black australorps
They are all 3 to 6 weeks old, ages vary.