I had the pleasure today of watching a family of five Robins feeding just outside the window. Two adults and three juveniles, still begging for food and being passed it by the adults, but clearly thoroughly mobile and capable. I hadn't seen juveniles before so this was a new experience for me.

The youngsters weren't obviously Robins on their own, and I wouldn't have recognised them without the adults beside them. They have the gaping yellow maw of many a young bird and there is the hint of a red breast, but otherwise it's not obvious to the untrained eye.