I would never expect this bird to be a Robin, so very different in color, but the same body type.
I took a look at the nest two days ago and saw that one of the eggs did not hatch. When I first approached the nest there was still one baby in it. As soon as it saw me it flew off, landing about 10 feet away.

The most precious of Robins is doing well, I would expect the same for Marion and yourself.