Recycled Bird's Nest

Before we even got moved in here on Old Baldwin Road, we had a swallow that lived here and built a bird's nest on one of our downspouts.  We would leave the door open as we were working, and the swallow would come inside and sit on the wooden hangers that we made for our fiddles.  For several years, the swallow would come back every year and re-use that same nest.  The swallow no longer comes here, but a robin has taken over the swallow's nest and has been using it for the past several years.  This year, I was cleaning the gutters on the building next to shop, and I looked over and saw that the bird's nest has somehow turned sideways and the robin just keeps building onto the top of it.  I decided it would be fun to post a picture of the robin sitting in the nest.  I used my telephoto lens, so I'm not really very close.  The robin has since raised another family and moved on for the year.  Here is the nest: