I checked the nest on 17th June and this is what I found:
Starlings!On 20th June it was all quiet in the box, so I checked again, and this is what I found:
An empty nest box is the best possible outcome, so I was very pleased to see that all 4 birds had fledged. The results were added to the BTO's Nestbox Challenge scheme (see here). So far I haven't seen any of the birds in the garden, despite having 19 juveniles feeding on the meal worms this morning, but I'll post any information I get, if they're re-sighted anywhere.