He mostly used materials he had on hand, because we're really tired of spending more on animal housing than we do on maintaining our own, so "cheap" was the operative word. He screened the sides with 1" poultry wire, built roosts for the turkeys, put in two doors - one for the turkeys to get in and out and one for us to access their food and water. It's gorgeous! When he finished building it, we thought it looked ark-like, hence the name - the Turkey Ark.
I think the remodel was successful, because this morning all 9 turkeys were still there, alive and well. While I did some work in the garden I let them out to free-range. They were hesitant at first (do you blame them?), but they seemed to enjoy the freedom.