Nice job on these Brian.
At least for the ducks in my area I find if you pretend to ignore them (as you casually walk closer) they won't freak out so much. Then sit down on a log or something and ignore them further. After 15 minutes or so they eventually figure out you're not out to eat them and they relax. I've had ducks walk right up to me and mommas lead their ducklings right by me just a few feet away.