The Marsh Sandpiper is a small, slender, and elegant wader with very long, greenish legs and a distinctive long, needle-fine, straight black bill. Found on freshwater to brackish wetlands, it appears pale grey-brown above and white below, with a white rump extending up the back in flight.

They breed in temperate eastern Europe, central Asia, and Siberia. They winter across sub-Saharan Africa, the Indian subcontinent, Southeast Asia including West Malaysia and Australia.

It is a very regular and common migrant to Seberang Perai but in small numbers, and usually in small flocks, their total numbers would be in the hundreds for the whole of the Seberang mainland, but total numbers seems to be down, as it is not as common in their previous inland freshwater habitat, like irrigation canals, paddy fields, and marshes.

https://datazone.birdlife.org/species/factsheet/marsh-sandpiper-tringa-stagnatilis