Long-tailed Duck

The long-tailed duck is a medium-sized sea duck that breeds in the tundra and taiga regions of the Arctic and winters along northern coastlines of the Atlantic and Pacific Oceans. The male has a long pointed tail, 10–15 cm long, and a dark grey bill crossed by a pink band, and in summer a dark head, neck and back with a white cheek patch. The males are vocal, with a musical yodelling call, ow, ow, owal-ow (Wikipedia, general species account).

It breeds across northern Eurasia and North America, laying six to nine pale grey to olive eggs per clutch. It is migratory and winters along the coasts of North America, on the Great Lakes, and on coastal northern Europe and Asia, with stragglers to the Black Sea. The cached account gives no detail specific to India. SoIB 2023 lists it as a winter migrant of wetlands that eats invertebrates, and does not assign a priority category (Wikipedia, general species account; SoIB 2023).