Today our little solo chick has mostly been by him/herself.  One of the adults stayed on the edge of the tuppernest until first breakfast (0443), alone until second breakfast (0704) and alone again (napping) until mid-morning snack (1030).  Nothing since, but that is a very usual pattern for meals, lots in the morning, a longer interval through the mid-day and then a couple in the late afternoon/evening.  Same routine as in Brandon ...