Wood sandpiper.

Attachment 126718
Nikon D4, Nikkor 500mm f4+ 1.4 Tc+1.5 crop factor [eff 1050 mm]
ISO 2000, f8, 1/400, exp bias -1/3.
on Tripod, ground level.

Beautiful portrait, great details and sharpness.

Not much wrong with that is there!
Looks great.

The only thing I can find is a little posterisation in the background - nit-picking is all.

Lovely bird, well exposed with a nice pose. I can see evidence of your selection around the bird esp around the head and beak.

Nice one.

Nice one, good composition. But I think it could use some more sharpness.

Great low angle makes this a winner.

The odd look in the BG is JPEG compression. Now I see it in the original -- didn't notice it before. Try using a higher quality setting.

Marina, I have not done any PP here except cropping and overall sharpening and overall NR. As Diane has later pointed out it might be due to jpeg compression.

I like the low angle, pose and details. there are compression artifacts in the BG

Beautiful image of sandpiper with nice colors,nice details and pose with slightly raised foot.
Rest is already mentioned above.

Regards,
Satish.