About this 3D model
I printed the back of this birdhouse using random stripes in red and green. The front features a circle of pine trees with tiny little ornament dots. The front is fastened with a couple of #5 screws that are ½" long. You could probably use any small screws you have lying around. This is so you can empty out any nests once the birds move out. That way it is clean for the next inhabitants. Features two holes in the top for a string to hang as well as a screw hole in the back. It also has two holes in the bottom for drainage. I have several similar birdhouses in the yard. They get a variety of residents in them, wrens, finches, etc. You could also shrink it down to make an ornament for a bird lover. If it is non functional, I'd skip the screws and just glue it.