If you have a screech-owl box or want to put one up, YOU NEED THIS BOOK.
It is basically a how-to guide, with answers to every question you might ever ask, plus waaaaaay more.
You'll find box designs, placement advice, setups that will allow you to lower the box instead of climbing a ladder to check the box, different camera setups for observing and streaming them, what to do about squirrels and wasps, how to make your yard screech-owl friendly, what to expect from your owls, cultural views of owls and much, much more.
The authors together have decades of experience with screech-owl boxes, plus they included information from others with extensive experience. It is a reference guide you'll use over and over again. There should be a book like this for every species for which you can build a nest box.ox!