Mine have gotten fickle regarding nesting boxes. When they were younger, and smaller, I started them off in milk crates with hay. The got too big for that, so I got a bigger crate. Nope, they wanted nothing to do with the bigger crates. I got totes, and cut a door out. Nope, that didn't suit them. One day I walked in, and discovered they had tipped the tote over on one side, and the top fell off. There in the crate, laying on it's side, were eggs. Son of a gun, they still like to use the tote that way.