We have a nest of robin's under our deck where I park the tractor. I therefore see them each day frequently. Now that the babies are getting larger and are crowding themselves out of the nest I see the mom and dad robin working frantically all day long from first dawn to evening bringing them insects to eat. These robins are the hardest working birds I have seen. They are constantly on the hunt for insects around the house.
I wondered what the life span of a robin was and discovered it is 15 months. Perhaps their short lifespan is due to the fact that they work themselves to death trying to feed their young. Fortunately we have abundant insects for them to bring back to the nest.