This bluetit (I will assume for the moment that all the visits are made by the same bird) is a pretty regular visitor. Here he is entering the box for the first time today.
The visits to Box2 appear to be fairly frequent.
Big brother is watching you! He looks suspiciously up at the camera.
I can remember reading George Orwell's book in the 1950s and thinking how far ahead 1984 was. Now it is over 25 years in the past!
For every visit inside the box, there must be half a dozen visits which are visible to the outside camera!
This reminds me that this camera needs adjusting so that the image of Box2 is in the centre of the picture. It looks as though the camera housing's front plate could do with a clean too!