It looks as though Box1 has already been taken. Here a bluetit approaches the box . . .
I cleared out Box1 and Box2 before Christmas, using the customary boiling water technique to kill off parasites etc., but hadn't got myself sufficiently well organised to start the diary before now. After last year's fiasco, I have decided to give up on Box3 this year and concentrate on the other two boxes, which is where most of the action has taken place in recent years.