Aythya baeri

Taxonomy

Assessment Information

Geographic Range

Population

Habitat and Ecology

Threats

Conservation Actions

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Taxonomy [top]

Kingdom	Phylum	Class	Order	Family
ANIMALIA	CHORDATA	AVES	ANSERIFORMES	ANATIDAE

Scientific Name:

Aythya baeri

Species Authority:

(Radde, 1863)

Common Name/s:

English

–

Baer's Pochard

Assessment Information [top]

Red List Category & Criteria:

Endangered A2cd+3cd+4cd ver 3.1

Year Assessed:

2008

Assessor/s:

BirdLife International

Reviewer/s:

Butchart, S. & Mahood, S.

Contributor/s:

Anderson, B., Baral, H., Barter, M., Chan, S., Chunkino, G., Duckworth, W., Eames, J., Hornskov, J., Li, Z., Moores, N., Round, P., Thompson, P. & Tordoff, J.

Justification:
This species has been uplisted to Endangered owing to an apparant accelleration in the rate of its decline, as measured by numbers on the wintering grounds. It is now absent or occurs in greatly reduced numbers over much of its former wintering grounds and is common nowhere. It is thought that hunting and wetland destruction are the key reasons for its decline.

History:

2004	–	Vulnerable
2000	–	Vulnerable
1996	–	Vulnerable
1994	–	Vulnerable

Geographic Range [top]

Range Description:	Aythya baeri breeds in the Amur and Ussuri basins in Russia and north-eastern China. It winters mainly in eastern and southern mainland China (c. 850 individuals)¹, India, Bangladesh (1,000 - 2,000 individuals)² and Myanmar (1,000 - 1,500 individuals)³ with smaller numbers in Japan, North Korea, South Korea (very few records in the latter three countries in recent years)⁴, Hong Kong (China), Taiwan (China), Nepal (now a very rare visitor and absent in some years)⁵, Bhutan, Thailand (still regular in small numbers, Bung Khong Long is the only site which still has double figure counts)⁶, Lao PDR (only one confirmed record)⁶, and Vietnam (very rare in recent years)⁶ and is a rare migrant to Mongolia. It has declined rapidly in recent years, for instance at Bung Boraphet, Thailand, up to 426 were recorded in 1988 whilst now there are more usually four or five individuals⁷. The total population is now likely to be less than 5,000 individuals¹.
Countries:	Native: Bangladesh; Bhutan; China; Hong Kong; India; Korea, Democratic People's Republic of; Mongolia; Myanmar; Nepal; Russian Federation; Taiwan, Province of China; Thailand; Viet Nam Vagrant: Japan; Korea, Republic of; Pakistan; Philippines Present - origin uncertain: Lao People's Democratic Republic
Range Map:	Click here to open the map viewer and explore range.

Population [top]

Population:	Cao Lei and M. Barter in litt. (2007)
Population Trend:	Decreasing

Habitat and Ecology [top]

Habitat and Ecology:	It breeds around lakes with rich aquatic vegetation in dense grass or flooded tussock/shrubby meadows. In Liaoning, China, it is usually found in coastal wetlands with dense vegetation, or on rivers and ponds surrounded by forest. The nest is built on a tussock or under shrubs, sometimes floating, and occasionally amongst branches. In winter, it occurs on freshwater lakes and reservoirs.
Systems:	Freshwater

Threats [top]

Major Threat(s):	Threats are poorly understood, but hunting and wetland destruction in its breeding and wintering grounds are probably the reasons for its decline.

Major Threat(s):

Threats are poorly understood, but hunting and wetland destruction in its breeding and wintering grounds are probably the reasons for its decline.

Conservation Actions [top]

Conservation Actions:	Conservation Actions Underway CMS Appendix II. It is legally protected in Russia, Mongolia and Hong Kong (China) and in some provinces in China. Some of its breeding and wintering sites are within protected areas, including Daursky, Khanka lake and Bolon lake (Russia), Sanjiang and Xianghai (China), Mai Po (Hong Kong), Koshi Barrage (Nepal), and Thale Noi (Thailand). Conservation Actions Proposed Research its population, distribution, ecology and threats in order to produce conservation recommendations. Establish more protected areas in its breeding grounds. Extend the area of the Khanka Lake Reserve (Russia). Designate the Xianghai Nature Reserve (China) as a restricted area during the breeding season. Regulate hunting of all Anatidae species in China. Ensure legal protection of this species in all range states.

Conservation Actions:

Conservation Actions Underway
CMS Appendix II. It is legally protected in Russia, Mongolia and Hong Kong (China) and in some provinces in China. Some of its breeding and wintering sites are within protected areas, including Daursky, Khanka lake and Bolon lake (Russia), Sanjiang and Xianghai (China), Mai Po (Hong Kong), Koshi Barrage (Nepal), and Thale Noi (Thailand).

Conservation Actions Proposed
Research its population, distribution, ecology and threats in order to produce conservation recommendations. Establish more protected areas in its breeding grounds. Extend the area of the Khanka Lake Reserve (Russia). Designate the Xianghai Nature Reserve (China) as a restricted area during the breeding season. Regulate hunting of all Anatidae species in China. Ensure legal protection of this species in all range states.

Citation:	BirdLife International 2008. Aythya baeri. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloaded on 09 February 2012.
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