The Boise & Elk River nestboxes are a different (but the most common) design from the Radisson nestbox, ours is less box, more tray with a cover. These boxes are very large - ours aren't. They are also entirely enclosed, ours aren't - ours are only half-covered. We used to use more open boxes but our birds don't seem to want to use them, they seem to prefer a) sky over their heads and b) smaller quarters. I'm hoping to increase the size on some of the new boxes and hope that they will appeal to some of the newcomers.
