This was one of the last tree swallows at the garden, still peering out of its box, long after all the others had left. I was starting to worry about it, when an adult flew in and fed it. However, a few days later, Barry checked the box and found two dead young in there. Whether this was one of them is hard to say. Certainly, this guy was well-feathered and appeared as if it should be ready to fly.