FWIW, I, and many keepers, brood outdoors in similar conditions....chicks are fine and arent even using supplemental heat past 4 weeks. Bird shown is more than capable of living outside where you liveI live in Michigan. There would be no way for me to put any of my chicks outside, it’s basically winter right now and snow is everywhere and if I’m lucky the temps get up to about maybe 20° everyday. I do take them outside when it’s actually nice enough and let them have some fresh air. Besides that I let them run around my house in a homemade diaper while I’m doing things.