Hi Scot-
So glad the little one fledged! There is a good chance you’ll see that baby again a couple of weeks down the road if he/she makes it through that time. My first brood fledged a few weeks ago & exactly 2 weeks later, the fledgelings were coming around with the parents to the feeder & bird fountain. Since the parents are nesting so soon again in your yard, I imagine it could be sooner. Others that have more experience could comment on what they’ve witnessed. I do hope they decide to renest in the same box & not the woodpecker box. Best of luck!
Nicole