Catching an Osprey

I knew that Belle Isle was home to eagles because I've seen them.  So  I decided to go looking for their nest.  As I was searching, I saw a rather large bird pulling what appeared to be a dead animal to this nest.  I thought that maybe I found the eagle's nest.

Instead, I found an osprey's nest which is pretty cool because ospreys are just as rare as eagles and they are pretty cool looking birds to boot.  I guess I should have figured this was not an eagle's nest.  I don't think they typically build a nest on a manmade structure.  Anyway, I will be checking this out more.