Great Tits in the bird box....
I have a box set up with a camera. Over the last few weeks we've been watching various pairs of prospective inmates surveying the box and a couple of weeks ago a pair of Great Tits moved in and started redecorating. They worked on the front door for a few days (at about 5AM) - hammering away at it with their beaks until it was big enough, despite it being big enough anyway.
Now we have 8 eggs in the nest and, after a few days of leaving them all day on their own, the mother is finally getting around to incubating them. I just hope they're still viable!
