8th May 2017
Since then, there's been a lot of activity around the box, as the adult birds have tried to encourage the young to leave. By 11th (yesterday), 4 of the 5 birds had flown, and today, when I got home from work, the box was empty.
12th May 2017 - empty nest
I'll update the BTO's Nestbox Challenge website with the data, and see if the birds have another brood like they did last year.
As well as these birds to look out for, I've also had my first ever ringed adult Starling in the garden this week. First seen on the 7th May, I was very keen to get a photo of the ring, just in case it was one of the previous year's birds. Unfortunately, the ring number wasn't one from the rings I'd used, so I contacted our data manager at Sorby Breck Ringing Group, who told me that it had been ringed by another member of our group about 1 mile away in June 2016. It was aged as a 5 then, so was born in 2015. It was collecting mealworms, so presumably has a nest nearby.