Marsh sandpiper 
(Choắt đốm đen, Tringa stagnatilis)

The marsh sandpiper (Tringa stagnatilis) is a small wader of the family Scolopacidae. 
The bird breeds in the Palearctic from easternmost Europe to the Russian Far East.
This species is migratory with a majority of birds wintering in Africa and India, and some migrating to Southeast Asia and Australia.

The term Charadriiformes comes from New Latin, combining the Greek word kharadrios ("a bird of river valleys" or "a bird of ravines") and the Latin suffix -formes meaning "forms" or "shaped like". Therefore, Charadriiformes translates to "birds shaped like or resembling the charadrius," which is a type of plover or stone curlew historically found in dry river beds or ravines. 

The word Scolopacidae is New Latin, derived from the genus name Scolopax (Latin for "snipe" or "woodcock") and the common zoological suffix for family names, -idae.

The name Tringa is the Neo-Latin name given to the green sandpiper based on Ancient Greek trungas, a thrush-sized, white-rumped, tail-bobbing wading bird mentioned by Aristotle.

The specific epithet stagnatilis is from Latin stagnum, "swamp".