Greylag Goose

The greylag goose is a large goose with mottled and barred grey and white plumage, an orange beak and pink legs, and is the largest and bulkiest of the grey geese. It is the ancestor of most breeds of domestic goose, domesticated at least as early as 1360 BCE, though it is more lightly built and agile than its domestic relative. Its plumage is patterned by pale fringes to the feathers (Wikipedia, general species account).

Birds from the north of its range often migrate south for the winter, though many populations are resident. They normally mate for life and nest on the ground among vegetation, usually laying four to six eggs, incubated by the female, with both parents defending the young. In winter they occupy semi-aquatic habitats, feeding on grass and often on agricultural crops. The sources opened give nothing specific to Nepal.