3 really nice shots Matt.
#1 I like the colours, however IMO just a little fill light to highlight the boardwalk and lighten the trees only slightly would help. Of course that's very subjective and it could be my monitor too.
2 and 3 are great... I have never seen anything like the bright green of that duck weed before!
And a query if you don't mind
What focal length and distance were you from the Spoonbill, to use a flash? I have never tried using a flash on birds as yet, I wouldn't have a clue how to go about it