Near as I can figure, these robin hatchlings are between 5 and 6 days old. They will remain in the nest for another 8 to 9 days before fledging. After another two weeks, the young fledglings should be able to forage for food on their own and sustain flight. Assuming that a blue jay or crow doesn't rob the nest or this family doesn't experience some other disaster, the mother robin will hopefully produce a second clutch in the same nest.
Robin hatchlings on May 15, 2011. I think there are four babies in the nest
but it is difficult to tell.