RhondaSue
In the Brooder
The difference between just putting them out in a run and what you do is that you provide them heat in the run. Mine are in an unheated building so they stay contained in the brooder for at least two weeks. It isn't because I am nicer, it is because I can't be bothered with worrying about them. I also don't have any heat sources in my run so they can't go into the run until fully feathered or unless the weather is really warm.
Using a Mama Heating Pad for a small number of chicks is one thing but I hatched 90 chicks and I don't think that trying to fit them all under a Mama Heating Pad would work.
Yea, I am a small time chicken farmer compared to you. My brood is in the house, in the middle of my dinning room table
My run is not heated either, but I do plan on putting either a light or a pad in our small coop.
Was nice chatting about this subject with you. May you chicks stay warm, and your hens lay plentous