Hello Jack, I have seen many Bluebird abodes and would actually have to see the one you are speaking of to know whether it is one I am familiar with. Is it like the tree limb box that has been written up in the Wisconsin Bluebird Society Publication? If so, I have seen that one and I was wondering if people in this area have had successes with that particular design. I would surely like to hear comments. Take care, Abbie/Bowie