Thank you, Ann, Margaret, and Lin. That helps a lot with my photo captioning.
I did speak with a local and was told that these are all feral ducks. Had heard of feral cats, but this was a new one for me. And, yes Melanie, there was quite a bit of duck poo around.
Another species was the "Egyptian Goose" which "isn't really a goose. It is closely related to the Shelduck, which isn't a duck at all but a cross between a goose and a duck".