Thanks Click! I don't like that much the second photo - from ~7meters for the Rudy Turnstone I had to shoot from ~11 meters for the Plover.
Very hot (especially above the sand) and humid day and these additional meters started eating from the detal.
The Little Stint is only 12-14cm long and it was ~80m away. As I wrote, the shot was just for the record - upscaled from a couple of hundred pixels to display it. If you want some high resolution ones, here is a Pectoral Sandpiper and a Ringed Plover that I got when I went back a couple of days ago and they came much closer to about 20m. RF + 100-500 @ 1000mm.