Nest box news

I thought there were eggs in the great tit box, but I couldn't find them in the photos until this morning, when mother great tit let us see them, just for a few seconds.  Then she covered them with wool before she went out for the day.  Meantime, there's another nest - this time, a blue tit one. There are two adults sleeping overnight, which is unusual. There's been one bird sleeping in this box all winter - I think it is the male of the pair.  No sign of eggs yet in this box, but the nest seems like a serious one.