Zoothera cinerea

Taxonomy

Assessment Information

Geographic Range

Population

Habitat and Ecology

Threats

Conservation Actions

Bibliography

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Taxonomy [top]

Kingdom	Phylum	Class	Order	Family
ANIMALIA	CHORDATA	AVES	PASSERIFORMES	TURDIDAE

Scientific Name:

Zoothera cinerea

Species Authority:

(Bourns & Worcester, 1894)

Common Name/s:

English

–

Ashy Thrush

Assessment Information [top]

Red List Category & Criteria:

Vulnerable A2cd+3cd+4cd ver 3.1

Year Published:

2012

Assessor/s:

BirdLife International

Reviewer/s:

Butchart, S. & Symes, A.

Contributor/s:

Allen, D. & Heaney, L.

Justification:
The continuing rapid reduction in the area of lowland forest throughout this species's range, coupled with more localised trapping pressure, is thought to be causing a rapid population decline. However, this species is known to be tolerant of secondary habitats, and may be more widespread than is currently thought. It is therefore listed as Vulnerable, pending better information on population size and distribution.

History:

2008	–	Vulnerable
2004	–	Vulnerable
2000	–	Vulnerable
1996	–	Vulnerable
1994	–	Vulnerable
1988	–	Near Threatened

Geographic Range [top]

Range Description:	Zoothera cinerea is endemic to the Philippines, where it is known from north and central Luzon and northern Mindoro. It is considered uncommon overall and was found to be scarce in the Sierra Madre mountains during surveys in the early 1990s. A recent review mapped just 25 locations, of which only 15 involved post-1980 records. At Dalton Pass on Luzon, 130 birds were trapped between 1964 and 1970. It is tolerant of secondary habitats, and is known to be secretive and therefore probably under-recorded, so it could prove to be more abundant than previously thought.
Countries:	Native: Philippines
Range Map:	Click here to open the map viewer and explore range.

Population [top]

Population:	The population size is preliminarily estimated to fall into the band 10,000-19,999 individuals. This equates to 6,667-13,333 mature individuals, rounded here to 6,000-15,000 mature individuals.
Population Trend:	Decreasing

Habitat and Ecology [top]

Habitat and Ecology:	It inhabits the floor, in particularly open patches of primary, selectively logged and secondary forests, mainly in the lowlands (e.g. 90-360 m on Mindoro). It has been recorded up to 1,100 m in the Sierra Madre mountains on Luzon. The large numbers caught at the Dalton Pass (1,560 m) migration funnel suggest either post-breeding dispersal or regular movement between the Sierra Madre and Cordillera Central, in response to differences in the rainy season.
Systems:	Terrestrial

Habitat and Ecology:

It inhabits the floor, in particularly open patches of primary, selectively logged and secondary forests, mainly in the lowlands (e.g. 90-360 m on Mindoro). It has been recorded up to 1,100 m in the Sierra Madre mountains on Luzon. The large numbers caught at the Dalton Pass (1,560 m) migration funnel suggest either post-breeding dispersal or regular movement between the Sierra Madre and Cordillera Central, in response to differences in the rainy season.

Systems:

Terrestrial

Threats [top]

Major Threat(s):	Deforestation is the chief threat. In 1988, an estimated 24% of Luzon remained forested. Forest cover in the Sierra Madre has declined by c.80% since the 1930s and most remaining areas are under logging concession. Major road building plans pose a further threat. Illegal logging is frequent at Angat Dam and Quezon National Park, two key sites for the species. In 1988, an estimated 8.5% (c.120 km²) of Mindoro remained forested, most at too high an altitude for the species. It may also suffer from hunting with snares in the Sierra Madre and illicit bird-trapping at Dalton Pass may exert a considerable pressure.

Major Threat(s):

Deforestation is the chief threat. In 1988, an estimated 24% of Luzon remained forested. Forest cover in the Sierra Madre has declined by c.80% since the 1930s and most remaining areas are under logging concession. Major road building plans pose a further threat. Illegal logging is frequent at Angat Dam and Quezon National Park, two key sites for the species. In 1988, an estimated 8.5% (c.120 km²) of Mindoro remained forested, most at too high an altitude for the species. It may also suffer from hunting with snares in the Sierra Madre and illicit bird-trapping at Dalton Pass may exert a considerable pressure.

Conservation Actions [top]

Conservation Actions:	Conservation Actions Underway It occurs in the Northern Sierra Madre Natural Park and nominal protection is afforded by the national park status of Mts Makiling and Quezon. On Mindoro, it is known from San Vicente, which is targeted for reforestation and rattan plantation by concession holders. Funding has been provided for faunal inventories and environmental education initiatives at Puerto Galera. Conservation Actions Proposed Conduct research into its seasonal movements. Propose key sites for designation as formal protected areas (e.g. Angat Watershed on Luzon and Puerto Galera on Mindoro). Extend the Sierra Madre Mountains Natural Park to include Mt Los Dos Cuernos. Introduce measures to restrict bird-trapping at Dalton Pass.

Conservation Actions:

Conservation Actions Underway
It occurs in the Northern Sierra Madre Natural Park and nominal protection is afforded by the national park status of Mts Makiling and Quezon. On Mindoro, it is known from San Vicente, which is targeted for reforestation and rattan plantation by concession holders. Funding has been provided for faunal inventories and environmental education initiatives at Puerto Galera.

Conservation Actions Proposed
Conduct research into its seasonal movements. Propose key sites for designation as formal protected areas (e.g. Angat Watershed on Luzon and Puerto Galera on Mindoro). Extend the Sierra Madre Mountains Natural Park to include Mt Los Dos Cuernos. Introduce measures to restrict bird-trapping at Dalton Pass.

Bibliography [top]

	Collar, N. J.; Mallari, N. A. D.; Tabaranza, B. R. J. 1999. Threatened birds of the Philippines: the Haribon Foundation/BirdLife International Red Data Book. Bookmark, Makati City. IUCN. 2012. IUCN Red List of Threatened Species (ver. 2012.1). Available at: http://www.iucnredlist.org. (Accessed: 19 June 2012).

Collar, N. J.; Mallari, N. A. D.; Tabaranza, B. R. J. 1999. Threatened birds of the Philippines: the Haribon Foundation/BirdLife International Red Data Book. Bookmark, Makati City.

IUCN. 2012. IUCN Red List of Threatened Species (ver. 2012.1). Available at: http://www.iucnredlist.org. (Accessed: 19 June 2012).

Citation:	BirdLife International 2012. Zoothera cinerea. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. <www.iucnredlist.org>. Downloaded on 19 June 2013.
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