I think it's a semipalmated sandpiper based on googling images.I don't think there is another black-coloured swan species so I'm pretty sure it has to be a Black Swan, sorry you can't find much about them but maybe they are not in your area for long periods of time?
With the little birdy I have no idea what exactly it is just because it was so far away and I can't zoom in, there are quite a few species of stint and sandpiper that look almost identical!
https://en.m.wikipedia.org/wiki/List_of_birds_of_Florida
Scroll down to "Sandpipers and allies."
I think it could be a sharp tailed sandpiper but again, no real clue.