This golden water makes a gorgeous BG John and you've got exposure just right for whites v. blacks. I'm shooting stills with exactly the same rig and finding the ISO capabilities of the 5DIV make life a lot easier for me on cloudy days or late in the afternoon.
I like the wet look tot he face, you can tell it has been diving. Just a touch dark for me, and I suspect you may have eliminated a bluish cast on the whites? You could either warm up the image even more, or pump the saturation (but not too much!). These guys can be tough to get close too, I can understand the big crop you needed.
Love these guy! Yes, they are very skittish, thus the large crop. To my eye, you might be able to brighten up the blacks just a tad, and also brighten the whites a little without blowing them. The breast especially looks a bit greyed out. Lovely water color.
Nice shot John, the breast looks a little grey to me too did you use Burn? I would suggest you try curves & mask with a blend mode eg multiply see how it goes.