Zoothera turipavae 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Aves Passeriformes Turdidae

Scientific Name: Zoothera turipavae Cain & Galbraith, 1955
Common Name(s):
English Guadalcanal Thrush
Taxonomic Source(s): del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A., Fishpool, L.D.C., Boesman, P. and Kirwan, G.M. 2016. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 2: Passerines. Lynx Edicions and BirdLife International, Barcelona, Spain and Cambridge, UK.
Identification information: 20 cm. Small dark grey-brown thrush. Upperparts plain with faint buffy eye-ring and fading more rufous onto rump. Throat paler and underparts spotted off-white, with more prominent, larger spots on belly. Bill dark, long legs dark fleshy-horn. Similar spp. Island Thrush Turdus poliocephalus plain brown with yellow bill, eye-ring and legs, juveniles duller with irregular tawny and orange spots. Voice Loud, clear song with repeated phrases.

Assessment Information [top]

Red List Category & Criteria: Vulnerable D1+2 ver 3.1
Year Published: 2016
Date Assessed: 2016-10-01
Assessor(s): BirdLife International
Reviewer(s): Butchart, S. & Symes, A.
Contributor(s): Dutson, G., Leary, T., Filardi, C. & Lagerqvist, M.
Facilitator/Compiler(s): Benstead, P., Derhé, M., Dutson, G., Ekstrom, J., Mahood, S., North, A.
This unobtrusive, shy species has a very small population inhabiting a very small range, leading to its classification as Vulnerable. However, there are extremely few data on which to base this estimate and it may prove either to be more widespread (and thus warrant downlisting to Near Threatened) or to be threatened by introduced mammals (and thus warrant uplisting to Endangered or even Critically Endangered).

Previously published Red List assessments:

Geographic Range [top]

Range Description:Zoothera turipavae has been recorded just three times from the type locality and ocne from another nearby location on Guadalcanal in the Solomon Islands, where there appears to be c.100 km2 of suitable habitat. One specimen was taken in 1953 (Cain and Galbraith 1956) and singles were seen in 1994 and 1997 (Gibbs 1996, G. Dutson pers. obs. 1997) and one individual was observed at 1,600 m on Mt. Mbutohaina in 2013 (M. Lagerqvist in litt. 2016).. The 1994 and 1997 records were of singing birds but no others were heard during these visits, which totalled about 10 days in suitable habitat. All other Melanesian Zoothera thrushes appear to be locally common but may be patchily distributed (G. Dutson pers. obs. 1997).

Countries occurrence:
Solomon Islands
Additional data:
Continuing decline in area of occupancy (AOO):Unknown
Extreme fluctuations in area of occupancy (AOO):NoEstimated extent of occurrence (EOO) - km2:650
Continuing decline in extent of occurrence (EOO):UnknownExtreme fluctuations in extent of occurrence (EOO):No
Number of Locations:1Continuing decline in number of locations:Unknown
Extreme fluctuations in the number of locations:NoLower elevation limit (metres):1000
Upper elevation limit (metres):1500
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:The population is estimated to number 250-999 mature individuals based on an assessment of known records and range size. This is consistent with recorded population density estimates for congeners and the fact that only a proportion of the estimated Extent of Occurrence is likely to be occupied.

Trend Justification:  There is no data and the population trend is not known, but is assumed to be stable.
Current Population Trend:Stable
Additional data:
Number of mature individuals:250-999Continuing decline of mature individuals:Unknown
Extreme fluctuations:NoPopulation severely fragmented:No
No. of subpopulations:1Continuing decline in subpopulations:Unknown
Extreme fluctuations in subpopulations:NoAll individuals in one subpopulation:Yes
No. of individuals in largest subpopulation:100

Habitat and Ecology [top]

Habitat and Ecology:The 1994 and 1997 birds were singing at 1,450-1,500 m at the altitudinal intergrade of montane and mossy forest, where it occurs with Island Thrush Turdus poliocephalus (Gibbs 1996, G. Dutson pers. obs. 1997). In 2013 one individual was observed at 1,600 m on Mt. Mbutohaina (M. Lagerqvist in litt. 2016). It is presumably a typical, largely terrestrial, ground thrush.

Continuing decline in area, extent and/or quality of habitat:Unknown
Generation Length (years):3
Movement patterns:Not a Migrant

Threats [top]

Major Threat(s): Although it may occur above the altitudes of logging and other human causes of forest degradation, intensive logging on west Guadalcanal may have had a negative impact on the species's habitat as some of these operations occurred in hill forest habitats and have altered the hydrology of the area (C. Filardi in litt. 2012). In addition, mining and prospecting activity has intensified in recent few years (C. Filardi in litt. 2012). It may be affected by introduced mammalian predators, especially cats and rats which are relatively common at high altitudes on Guadalcanal (T. Leary in litt. 2000).

Conservation Actions [top]

Conservation Actions: Conservation Actions Underway
None is known. Some surveys are planned to obtain more up-to-date data on the species within the next year (C. Filardi in litt. 2012).

Conservation Actions Proposed
Survey other high mountains on Guadalcanal. Use mist-nets and tape-recordings to help locate it. Survey at lower altitudes on the southern watershed. Research basic population ecology and habitat requirements of closely related Makira Thrush Z. margaretae. Assess the threat from introduced mammals. If judged necessary, instigate control measures against introduced mammals. Work with land-owning communities to conserve large areas of suitable habitat.

Citation: BirdLife International. 2016. Zoothera turipavae. The IUCN Red List of Threatened Species 2016: e.T22728359A94981736. . Downloaded on 18 June 2018.
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