Xuan Thuy National Park is in Giao Thuy District, Nam Dinh Province, 150km southeast of Hanoi. The national park is on a rivermouth where the Red River discharges its water into the East Sea. The national park is listed as a Ramsar site and one of Global Biosphere Reserves by the UNESCO.

The national park covers an area of 15,000 hectares with 1.583+ fauna species, 330+ flora species, 222+ bird species. Xuan Thuy National Park is a destination for migratory birds, especially aquatic bird species: 
- Those birds from the far northern places territories and countries to winter from October through April;
- Those bird species from southern Vietnam and Cambodia to escape the heat.

Common kingfisher (Bồng chanh thường, chim bói cá sông, Alcedo athis)
Black-faced spoonbill (Cò thìa mặt đen)
Chinese egret (Cò trắng Trung Quốc, Egretta eulophotes)
Nordmann's greenshank (Choắt lớn mỏ vàng, Tringa guttifer)
Saunders's gull (Mòng biển mỏ ngắn, Chroicocephalus saundersi)

Spot-billed pelican (Bồ nông chân xám, Pelecanus philippensis)
Spoon-billed sandpiper (Rẽ mỏ thìa, Calidris pygmeus)
Asian dowitcher (Choắt chân màng lớn, Limnodromus semipalmatus)
Black-tailed godwit (Choắt mỏ thẳng đuôi đen Limosa limosa)
Spotted redshank (Choắt chân đỏ, Tringa erythropus)
....