However, to get back to Box1!
The great tits are very busy with this box. They are in and out all the day. I was hoping that by the time dusk was falling, the birds would go off to roost and I could change the camera without disturbing them. The great tit male roosting put an end to that idea.
Another diversion, there is a bluetit here that seems to find the presence of the great tit as a personal insult. "Here, that's my box" he seems to be saying. He only appears on the scene when a great tit has gone inside. Here he is again to make his point.
I think this must be the female. She is removing a dropping from the nest box - left by the male last night I have no doubt.
You can see why I have decided to move the camera back a bit. It's too close at the moment to catch some of the interesting bits of action.
Here you can see a shot of the great tit inside the box. It has a narrow black band down its front and that supports my theory that it is the female. The male's black band is broader and stronger.