Once again, yet another good match a D800 + 70-300. The bird image is excellent with lots of detail. I see it was taken at 300mm, which usually softens the image with the 70-300mm. My experience of that lens was excellent up to 250mm, but your copy seems fine at maximum.
<<I'm not sure any of these are suitable for framing, but I would welcome constructive comments>>
I have looked at your image and just darkened the mid tones and to my eye it looks better for it. I think it would make an excellent framed image.