My husband has agreed to me raising meat chickens (I'll be doing 25 Cornish X), IF the chickens are 100% outside from day 1. Not even in the garage.
It can certainly be under cover, and protected from wind - I have an existing (predator proof) chicken run. It's roofed and I can hang heavy tarps on the sides to stop wind. And of course I can use heat lamps in it.
So - is that possible? Acceptable? All the directions and photos I'm finding about the brooder stage have it indoors in some fashion.