All the time it has been there, not a single bird has nested in it. Until this year. I am not entirely sure what they are, as they come and go so fast, but there have been a couple of birds visiting the box. This year, I let the pear tree grow out a bit , and as a result, there is more growth around the box, and so it is more protected.
Unfortunately, it has been on the wall for a good few years, and the recent attention seems to be all that was needed for the box to start to break apart. When I noticed this, it was barely hanging on the wall. I carefully and gently moved it, so it was more lodged against the trunk, aware of the beady eye pearing out at me. I don’t want to interfere too much, but at some time, I think I will bend some of the new growth around it and tie them to keep it safely lodged.