The blue tit nest is really a mess, not been cleaned for a few weeks. Pretty sure it's her doing the cleaning, right at the start you can see another blue tit at the hole, that looks bigger, I think that's the male that has the ⚡shaped chest marking. It'll take a few weeks for her clean it out at this rate, hopefully then she'll start making a nest again, she added a few bits of grass late February last year...
Note: The nest isn't accessible easily for me (4m up a ladder and I hate heights...) so gets cleaned once a year usually October (Legally you can only remove unhatched eggs between Sep-Jan in England) and she may not be happy if I was to interfere with her sleeping/nesting site anyway..
