Nice wide open view, Alan, and like the light and color/texture of the grasses. Agree about halo, could just zoom in and manually clone it out. I might also try to pull out just a bit more color from the sky if possible. Clouds and pond in FG make a nice composition.
I can't say the FG is doing much for me. I suggest a crop into a pano to see if you like that. If those clouds on the left were present in the whole sky, that would ahve been killer.
Maybe it's just me, but I like the foreground, it adds character and an anchor for the scene as a whole. The small wet land breaks up the grasses. The dead tree branches are OK for me too. Love the sky. I've been to Plum Island only once, no birds in range. Lots of gawkers however.
Late to the party here, Allan. Nice-looking scene. The halo in the OP was mentioned, and it's not as prevalent in your repost.
The repost is just a tad too dark for me given the apparent time of day. Perhaps a luminosity somewhere between the 2 is best??
When I do use Photomatix these days I tend to always use the "Fusion" method as it creates less halos and yields a more natural-looking result. For best results manual blending is the way to go...and for even better ones using filters is the way to go.