Oh Chico, poor little robin, I love robins too:sad: If there is any way you can capture him, I know the THS will take him into their wildlife area, maybe call them, as they may be able to advise how to catch him.
I had one over the fall, who seemed to have trouble swallowing, we tried to catch him to see if we could help, but were unable too. We did make sure he was well fed (they love grapes and apples and cooked hamburgers broken up). We found him dead early one morning, I was so sad, and still wish I could have captured him to help.
Good luck
with that sweet thing, and please keep us updated.