A piece of black and white movie.
I just happened to glance at the security camera monitor and saw that there was a Blue Tit in the nestbox so I hit the record button. Yesterday one of the Blue Tits had left a couple of feathers in the box. This time she (I assume) picked up a feather and performed a shuffle. Then she gets rid of the feather and performs another couple of shuffles. From what I have read on other sites this could be a good sign that the Blue Tits may well use the box for nesting this year.