Or at least that's what I think it is doing. There was another one further up in the tree, so not sure if there was some connection or not. This is the same tree that the Blue Heron is in. I've also noticed that there is another Blue Heron nest in this same tree, but just don't have as good of a view of it. The other Heron is just sitting on the nest, so pretty sure there will be young ones in the near future.