Blue tits 1

We have a couple of blue tits nesting 6 feet from our kitchen window in a hole in one of our apple trees. We have had previous success with tits in a nesting box but I believe tree holes are what their preferred nesting site.
This has provoked much interest with the neighbourhood cats and we are doing our level best to try and keep them away.
This will probably be the first in a series of unfocussed blurry shots!