Fantastic. I raised a few batches of week old chicks in the house. The last batch I made a new brooder in the garage- hardware cloth sides. These chicks are just like yours and now also thriving in my barn grow up coop. I can't wait to read the heating pad thing because that's what I've been using! I wrap it in a plastic table cloth fresh for each batch, and tape it inside the roof of a shoe box. They love the warm cave. This really affirmed my gut instincts and I'll continue to raise bold, friendly, and healthy chicks in this manner.