HFCheung

Looks like Grey-tailed Tattler.

HF Cheung

HFCheung

I have thought about Great Knot, but the pale orange legs looks odd for that.  I have also thought about the size, but I have been tricked several times before on size.  So sometimes I would disregard the size factor if that is close enough.
I think "Grey-tailed Tattler" and "Great Knot" are suggestions that for the observer to decide, who should have more views than one single photo on this bird.

HF Cheung