Thanks so much. For several reasons you’ve mentioned, the current box isn’t appropriate, primarily because I can’t easily access the interior of the box and the design, while very clever and attractive, makes the pair and young vulnerable to predators. After researching bluebirds, I was actually surprised and then concerned when the bluebirds took interest beginning mid April, later producing young.
I can switch the boxes out fairly quickly so I believe I’ll roll the dice. I’ll let the forum know of the results.