Anatidae Site Network in the East Asian Flyway Introduction to the Site Network Status of Anatidae populations in the East Asian Flyway 2002 edition [ PDF ] [ Back ]

Status of Anatidae populations migratory in the East Asian Flyway, for identifying the wetlands of international importance in the Site Network, based on the Waterfowl Population Estimates -- Third Edition (Wetlands International 2002).

See footnotes for descriptions on conservation status and trends.

Species or subspecies		Population	Population Estimates		Conservation Status	1% level
			Size	Trend
Dendrocygna javanica		Eastern & Southeastern Asia	100,000-1,000,000	DEC	B (2c)	10,000
Cygnus olor		Eastern Asia	1,000-3,000		A (2)	20
Cygnus cygnus		Eastern Asia	60,000		B (1)	600
Cygnus columbianus
subsp.	jankowskii	Eastern Asia	86,000		B (1)	860
Anser cygnoides		Eastern Asia	50,000-60,000	DEC	A (1,3)	550
Anser fabalis
subsp.	middendorffii	Eastern Taiga (breeding)	50,000-70,000	DEC	A (3c)	600
subsp.	serrirostris	Eastern Tundra (breeding)	45,000-65,000	DEC	A (3c)	550
Anser albifrons
subsp.	frontalis	Eastern Asia	100,000-150,000	DEC	B (2c)	1,300
Anser erythropus		Eastern Asia	14,000	DEC	A (1,2)	140
Anser anser
subsp.	rubrirostris	Eastern Asia	50,000-100,000		B (1)	750
Anser indicus		Central, South, Southeastern Asia	52,000-60,000		B (1)	560
Anser caerulescens
subsp.	caerulescens	Eastern Asia	<300		A (2)	3
subsp.	caerulescens	Wrangel Is (breeding)	105,000	STA	C (1)	1,100
Anser canagicus		Northern Pacific	84,500	STA	B (1)	850
Branta canadensis
subsp.	leucopareia *	Eastern Asia
Branta bernicla
subsp.	nigricans	Eastern Pacific (wintering)	136,200	INC	C (1)	1,400
subsp.	nigricans	Eastern Asia	5,000		A (2)	50
Tadorna ferruginea		Eastern Asia	50,000-100,000		B (1)	750
Tadorna cristata		Eastern Asia	<50	EXT?	A (1,2)	1
Tadorna tadorna		Eastern Asia	100,000-150,000		C (1)	1,300
Sarkidiornis melanotos
subsp.	melanotos	Southern & Southeastern Asia	6,000	DEC	A (2)	60
Nettapus coromandelianus
subsp.	coromandelianus	Eastern & Southeastern Asia	25,000-1,000,000		C (1)
Aix galericulata		China (non-breeding)	20,000	DEC	A (2)	200
Aix galericulata		Korea (non-breeding)	5,000	DEC	A (2)	50
Aix galericulata		Japan (non-breeding)	40,000	STA	B (1)	400
Anas penelope		Eastern Asia	500,000-1,000,000	DEC	B (2c)	7,500
Anas falcata		Eastern Asia	35,000	DEC	A (3)	350
Anas strepera
subsp.	strepera	Eastern Asia	500,000-1,000,000	DEC	B (2c)	7,500
Anas formosa		Eastern Asia	300,000	INC	A (1)	3,000
Anas crecca
subsp.	crecca	Eastern & Southeastern Asia	600,000-1,000,000	DEC	B (2c)	8,000
Anas platyrhynchos
subsp.	platyrhynchos	Eastern Asia	1,500,000		C (1)	15,000
Anas poecilorhyncha
subsp.	zonorhyncha	Eastern Asia	800,000-1,600,000	DEC	B (2c)	12,000
subsp.	haringtoni	Southeastern Asia	10,000-100,000		B (1)	1,000
Anas acuta		Eastern & Southeastern Asia (non-breeding)	500,000-1,000,000	DEC	B (2c)	7,500
Anas querquedula		Eastern & Southeastern Asia (non-breeding)	100,000-1,000,000		C (1)	10,000
Anas clypeata		Eastern & Southeastern Asia (non-breeding)	500,000-1,000,000		C (1)	7,500
Aythya ferina		Eastern Asia	600,000-1,000,000		C (1)	8,000
Aythya nyroca		Southern, Eastern & Southeastern Asia	25,000-1,000,000	DEC	B (1)
Aythya baeri		Eastern & Southeastern Asia	10,000-20,000	DEC	A (1,2)	150
Aythya fuligula		Eastern & Southeastern Asia (non-breeding)	500,000-1,000,000		C (1)	7,500
Aythya marila
subsp.	mariloides	Eastern Asia	200,000-400,000		C (1)	3,000
Somateria mollissima
subsp.	v-nigra	Eastern Siberia & Northwestern North America	130,000-200,000	DEC	B (2c)	1,700
Somateria spectabilis		Eastern Asia
Somateria fischeri		Eastern Siberia & Northwestern Alaska	330,000-390,000		C (1)	3,600
Polysticta stelleri		Northern Pacific (non-breeding)	180,000	STA?	C (1)	1,800
Histrionicus histrionicus
subsp.	pacificus	Eastern Asia	25,000-100,000		B (1)	1,000
Clangula hyemalis		Eastern Asia	500,000-1,000,000		C (1)	7,500
Melanitta nigra
subsp.	americana	Eastern Asia	100,000-1,000,000		C (1)	10,000
Melanitta fusca
subsp.	stejnegeri	Eastern Asia	600,000-1,000,000		C (1)	8,000
Bucephala clangula
subsp.	clangula	Eastern Asia (non-breeding)	50,000-100,000		B (1)	750
Mergus albellus		Eastern Asia (non-breeding)	25,000-100,000		B (1)	1,000
Mergus serrator
subsp.	serrator	Eastern Asia (non-breeding)	25,000-100,000		B (1)	1,000
Mergus squamatus		Eastern Asia	3,600-4,500	DEC	A (1,2)	40
Mergus merganser
subsp.	orientalis	Eastern Asia (non-breeding)	50,000-100,000		B (1)	750

Trend of populations are:

Conservation status of the populations

Anatidae populations are ranked into three levels of conservation status (Rank A-C). The category each population meets is shown in the column of the rank in the table.

Rank A

The populations classified in Rank A have high priority for the conservation. The populations classified in this rank are objects of Network Criteria 3. Identified in Rank A are those populations which fall into these categories:

Rank B

The populations classified in Rank B have priority for the conservation. Identified in the Rank B are those populations which fall into these categories:

Rank C

Note:

1. It is known that Branta canadensis leucopareia formerly bred on Kuril Islands in Russia and wintered in Japan though only vagrant birds from North America are found to winter in Eastern Asia. Conservation status of this population is not shown in the table but the population is to be included in re-establishment efforts.

References

• Wetlands International. 2002. Waterfowl Population Estimates -- Third Edition. Wetlands International Global Series No. 12, Wageningen, The Netherlands, 226 pp.

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The "Action Plan for the Conservation of Migratory Anatidae in the East Asian Flyway" is a component of the "Asia-Pacific Migratory Waterbird Conservation Strategy", and the "Anatidae Site Network in the East Asian Flyway" is a programme of international co-operation to enhance the conservation of the wetlands of international importance for Anatidae (ducks, geese and swans) in the flyway under the "Action Plan". The "Anatidae Working Group" of Asia-Pacific Migratory Waterbird Conservation Committee oversees the implementation of these programmes with technical support from Anatidae Flyway Officer. For further information, please contact the Anatidae Flyway Officer. Posted 7 December 2002.