Wetlands on the plains of the Amur-Heilong River are globally significant for migration of tens of thousands of geese and hundreds of thousands of ducks and waders. Six species of cranes migrate through the area and four of them also nest here. Endangered species such as Far Eastern curlew (Numenius madagascarensis), swan goose (Anser cygnoides), and Baikal teal (Anas formosa) and many others depend on these stop-over areas. Each spring and autumn, birds stop here to feed and rest along the East Asian migration routes between nesting areas in the north and wintering grounds in the Yangtze River valley in China and on the Korean Peninsula and the islands of Japan.
A narrowing of the transcontinental migratory ways of birds occurs in Dauria. This means the region has global importance for the conservation of a number of migratory and nesting birds. There are 19 species from among those birds that are on the IUCN Red List (including globally rare or vulnerable), specifically five species of cranes, swan goose, and others. Several reserves are Wetlands of International Importance (under Ramsar Convention): Daurian International Protected Area (DIPA) was created by Mongolia, China and Russia in 1994 to protect and study biodiversity of the region. All the three reserves currently comprising original DIPA have Ramsar status (Dalai Lake (Ch), Mongol-Daguur (Mn), Daursky (Rus)). There is the possibility of presenting this international protected area as a united transboundary wetland. Four more clusters in Daurian ecoregion also merit Ramsar listing : Argun/Eerguna River midflow (China/Russia), Huihe river floodplain, (China); Lake Buirnuur (China-Mongolia); Aginsky lake-steppe complex(Russia).
Rapid development of riparian ecosystems throughout Northeast China means that the transboundary valleys harbor some of the last remaining habitat for migratory and breeding waterfowl and plays a crucial role in their survival. Drainage of wetlands, dam construction, human disturbance, grass fires, and sport hunting are the major threats in the East Asian Flyways. Another area of great concern is the already high and ever increasing mortality of birds on their wintering grounds in Southeast Asia.