Well, we went ahead and captured the whole family of 5 and put them in the brooder box, with the heat lamp about 3' above, and with chick starter feed and water. Momma seems happy, even after being captured with a fish net, and the chicks alternate between exploring and going under momma's wings! Our twelve one-month old chicks are separated by a plastic construction fence partition, and every time they approach the new mom and chicks, she tries to peck them! Good, protective momma, a Black Australorp. Daddy is an Easter Egger, but all the chicks look like BA's. It will be interesting to see what they turn out to look like. Will momma do OK on the chick starter feed for a couple of weeks?