I have an extremely large wood brooder, but it is temporarily housing my injured Rooster and his friend until we get a safe coop built for them. So I can't use it.See if you can find an old wooden box and fashion an old screen on it. We even used a fish tank but you have to keep good air circulation and brooder bulbs can fry them. Had to be predator proof in my home.
I'll find something, and soon.