passerby-b

I suppose this is different from the one I guessed it was a red-necked stint because feathers at their backs were different. However, I had not a bit of idea of what this was after exhausting my identification books. My blind bet is Red Knot

kmike

Looks like a winter plumage Red-necked Stint to me

Cheers
Mike K

passerby-b

Thank you for the identification!