A Black Tailed Godwit (Limosa limosa) : They mainly eat invertebrates, but also aquatic plants in winter and on migration. In the breeding season, prey includes beetles, flies, grasshoppers, dragonflies, mayflies, caterpillars, annelid worms and molluscs. Occasionally, fish eggs, frogspawn and tadpoles are eaten. In water, the most common feeding method is to probe vigorously, up to 36 times per minute, and often with the head completed submerged. On land, black-tailed godwits probe into soft ground and also pick prey items from the surface. (From Wikipedia).
Saw this beautiful bird in a small waterbody next to Sambar Lake.