Well, as much as I don't have space in house for a brooder, I set one up and had it to temp just in case. The first day mama was with chicks was dicey. In the high 50s / low 60s. The chicks kept huddling in a corner sun spot no matter how much Popcorn sat and called to them. I sat by the deck...
I posted elsewhere with questions but wanted to share in a separate thread with the outcome because this might be helpful to others in a similar situation.
I have a LF and a bantam flock. They're typically merged (until my husband builds me a separate bantam coop/run) but I separated them...