Juvenile blue tits just before they fledged.
Several of the young birds have left the nest but two are still being by the parents. Three had died in the box and they have been cleared out. All in all a success. (And yes, I know about google searches)
It feels good to be thinking about this new story, and I used it as an excuse to order a couple of research books. Sigh. Research books. Happy sigh. It will be a good story but I do not wnat to go towards the gothic.