Guandu Nature Park is situated in north Taiwain, at the junction of Tamshui and Keelung rivers, with Datun mountain to the northeast and Guanyin mountain to the southwest. The park is a biodiversity environment of about 57 hectares and divides into 4 parts – Main Area, Core Reserve Area, Outdoor Observational Area and Sustainable Management Area; the landscape consists of woodland, streams, creeks, brackish ponds and rice paddies.
It is a major stopover site for migrating birds, especially waterfowl and shorebirds, and is an important wintering and breeding ground for many species; 229 species of birds have been observed qualifying this wetland as an Important Bird Area (IBA), recognised by Bird Life International (IBA site description).
There are over 830 species of animals, including birds, reptiles, amphibians, fishes, mammals, bristle worms, snails, crustaceans, and insects.