More than 6,000 geese overwinter in the Keoladeo National Park, Bharatpur, Rajasthan, India. The Eastern Greylag Goose Anser anser rubrirostris is the most common goose, with a peak population of about 5,000 birds. They arrive in the Park by early November and leave by mid March, a pattern which is typical of northern India (Ali and Ripley 1968). The Barheaded Goose Anser indicus at between 500 -1,000 individuals is less numerous. They arrive in numbers by late December and leave by mid April. This goose has undergone a significant population decline in the past several decades (Gole 1982).