I also saw Mallards and Canada Geese, but they practically fall in your lap. Actually they’ll do that if you go to the right place and fill your lap with edibles, but I don’t recommend doing that, especially with the geese. :)
I’m not a bird-watcher, just someone who enjoys seeing herons and egrets.
That Green Heron, assuming it is the same one as when I was going for walks several years ago, and I think it is the same one, must be getting old.