We have an interested Blue Tit. He has been popping his head in and out of the box for a little while. More recently he has been sitting inside and having a more detailed look.
We have noticed a hole in a nearby tree which may be from a woodpecker? (I'll try to add a photo) I'm hoping this doesn't disturb any nesting birds. It's a shame we couldn't put the camera in the woodpecker hole.