Phylloscopus hainanus

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	PASSERIFORMES	SYLVIIDAE

Scientific Name:

Phylloscopus hainanus

Species Authority:

Olsson, Alström & Colston, 1993

Common Name/s:

English

–

Hainan Leaf-warbler, Hainan Leaf Warbler

Taxonomic Notes:

Described as new to science by Olsson et al. (1993).

Assessment Information [top]

Red List Category & Criteria:

Vulnerable B1ab(ii,iii,v) ver 3.1

Year Published:

2012

Assessor/s:

BirdLife International

Reviewer/s:

Butchart, S. & Symes, A.

Contributor/s:

Fellowes, J. & Wei, L.

Justification:
This species, known from only a handfull of sites, and has a small and declining range and population as a result of widespread deforestation. It therefore qualifies as Vulnerable.

History:

2008	–	Vulnerable
2004	–	Vulnerable
2000	–	Vulnerable
1996	–	Vulnerable
1994	–	Vulnerable
1988	–	Not Recognized

Geographic Range [top]

Range Description:	Phylloscopus hainanus, described in 1993, is known from only eight localities in the mountains of Hainan Island, China (BirdLife International 2001). Although it is locally common, with flocks of up to 40 recorded (Anon. 2002), it is absent from some apparently suitable forest sites and is probably declining.
Countries:	Native: China
Range Map:	Click here to open the map viewer and explore range.

Population [top]

Population:	The population is estimated to number 2,500-9,999 individuals based on an assessment of known records, descriptions of abundance and range size. This is consistent with recorded population density estimates for congeners or close relatives with a similar body size, and the fact that only a proportion of the estimated Extent of Occurrence is likely to be occupied. This estimate is equivalent to 1,667-6,666 mature individuals, rounded here to 1,500-7,000 mature individuals.
Population Trend:	Decreasing

Population:

The population is estimated to number 2,500-9,999 individuals based on an assessment of known records, descriptions of abundance and range size. This is consistent with recorded population density estimates for congeners or close relatives with a similar body size, and the fact that only a proportion of the estimated Extent of Occurrence is likely to be occupied. This estimate is equivalent to 1,667-6,666 mature individuals, rounded here to 1,500-7,000 mature individuals.

Population Trend:

Decreasing

Habitat and Ecology [top]

Habitat and Ecology:	It occurs in primary, selectively logged and secondary forest and scrub at 640-1,500 m. It may previously have occurred at lower elevations where very little forest now remains. Fledged young and a nest have been found in April, with breeding apparently completed by May.
Systems:	Terrestrial

Threats [top]

Major Threat(s):	Forest loss and fragmentation is the main threat. The area of natural forest on Hainan decreased from 16,920 km² in 1943 to 3,000 km² in 1994, mainly as a result of timber extraction, the replacement of forest by rubber plantations, slash-and-burn agriculture and the unrestricted cutting of wood for fuel and other uses. Much of the remaining forest is disturbed or modified, although some large primary tracts remain (J. Fellowes in litt. 2007).

Major Threat(s):

Forest loss and fragmentation is the main threat. The area of natural forest on Hainan decreased from 16,920 km² in 1943 to 3,000 km² in 1994, mainly as a result of timber extraction, the replacement of forest by rubber plantations, slash-and-burn agriculture and the unrestricted cutting of wood for fuel and other uses. Much of the remaining forest is disturbed or modified, although some large primary tracts remain (J. Fellowes in litt. 2007).

Conservation Actions [top]

Conservation Actions:	Conservation Actions Underway It has been recorded in Bawangling, Jianfengling, Wuzhishan and Diaoluoshan National Nature Reserve, Nanweiling Forest Area and Jiaxi, Yinggeling and Limushan Nature Reserves. Recent surveys from Exianling and south-east Hainan have added considerably to knowledge of its distribution and abundance. Hainan Wildlife Conservation Centre (HWCC) of the Hainan Forestry Department, supported by Kadoorie Farm & Botanic Garden in Hong Kong, has worked hard to protect remaining natural forests including the large central Yinggeling Nature Reserve. Conservation Actions Proposed Ensure effective forest protection across all protected areas in its range. Conduct surveys of its distribution, with the aim of determining whether existing protected areas are adequate for its conservation and, if not, to identify additional areas that need to be protected. Research its habitat requirements. Extend and link existing protected areas within the range. At Jianfengling Nature Reserve, enlarge the reserve to link up with Houmiling; at Wuzhi Shan Nature Reserve, reconstruct forest corridors to link this reserve with Qizhiling Nature Reserve; consider linking Limu Shan Nature Reserve with Fanjia Nature Reserve; at Jiaxi Nature Reserve, extend the reserve to Houmiling and strengthen forest protection.

Conservation Actions:

Conservation Actions Underway
It has been recorded in Bawangling, Jianfengling, Wuzhishan and Diaoluoshan National Nature Reserve, Nanweiling Forest Area and Jiaxi, Yinggeling and Limushan Nature Reserves. Recent surveys from Exianling and south-east Hainan have added considerably to knowledge of its distribution and abundance. Hainan Wildlife Conservation Centre (HWCC) of the Hainan Forestry Department, supported by Kadoorie Farm & Botanic Garden in Hong Kong, has worked hard to protect remaining natural forests including the large central Yinggeling Nature Reserve.

Conservation Actions Proposed
Ensure effective forest protection across all protected areas in its range. Conduct surveys of its distribution, with the aim of determining whether existing protected areas are adequate for its conservation and, if not, to identify additional areas that need to be protected. Research its habitat requirements. Extend and link existing protected areas within the range. At Jianfengling Nature Reserve, enlarge the reserve to link up with Houmiling; at Wuzhi Shan Nature Reserve, reconstruct forest corridors to link this reserve with Qizhiling Nature Reserve; consider linking Limu Shan Nature Reserve with Fanjia Nature Reserve; at Jiaxi Nature Reserve, extend the reserve to Houmiling and strengthen forest protection.

Citation:	BirdLife International 2012. Phylloscopus hainanus. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. <www.iucnredlist.org>. Downloaded on 25 May 2013.
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