Lalage sharpei 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Aves Passeriformes Campephagidae

Scientific Name: Lalage sharpei Rothschild, 1900
Common Name(s):
English Samoan Triller
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.

Assessment Information [top]

Red List Category & Criteria: Near Threatened 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.
Facilitator/Compiler(s): Derhé, M., Mahood, S., O'Brien, A., Shutes, S., North, A.
This species qualifies as Near Threatened because it is likely to have a moderately small population and range which is declining as a result of habitat degradation. Further data on population size and trends for this species are urgently required and may lead to it being uplisted to Vulnerable.

Previously published Red List assessments:

Geographic Range [top]

Range Description:Lalage sharpei is endemic to Samoa where it is found on Savai'i (race tenebrosa) and Upolu (nominate sharpei). In a survey during 1984, it was nowhere common in the O le Pupu-pu'e National Park on `Upolu (Beichle and Maelzer 1985), and it is regarded as uncommon overall. It has been recorded infrequently on the Aleipata Islands (Parrish and Sherley 2012). There are no published population estimates.

Countries occurrence:
Additional data:
Continuing decline in area of occupancy (AOO):Yes
Extreme fluctuations in area of occupancy (AOO):NoEstimated extent of occurrence (EOO) - km2:4800
Continuing decline in extent of occurrence (EOO):UnknownExtreme fluctuations in extent of occurrence (EOO):No
Continuing decline in number of locations:Yes
Extreme fluctuations in the number of locations:NoLower elevation limit (metres):200
Upper elevation limit (metres):600
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:The global population size has not been quantified, but the species is described as generally uncommon (del Hoyo et al. 2005).

Trend Justification:  There are no data on population or trends. However, the species is suspected to be in decline owing to habitat degradation.
Current Population Trend:Decreasing
Additional data:
Number of mature individuals:UnknownContinuing decline of mature individuals:Yes
Extreme fluctuations:NoPopulation severely fragmented:No
Continuing decline in subpopulations:Unknown
Extreme fluctuations in subpopulations:NoAll individuals in one subpopulation:No
No. of individuals in largest subpopulation:100

Habitat and Ecology [top]

Habitat and Ecology:It inhabits primary and secondary forest and forest edge above 600 m on Savai'i (race tenebrosa) and at least to 200 m on `Upolu (nominate sharpei). It also occurs (rarely) in cattle pastures where there is undergrowth and trees, and in traditional plantations with few permanent houses (Beichle in prep.). It feeds on fruits and invertebrates (Beichle in prep.), foraging largely in the canopy of tall trees (Pratt and Mittermeier 2016).

Continuing decline in area, extent and/or quality of habitat:Yes
Generation Length (years):3.7
Movement patterns:Not a Migrant

Threats [top]

Major Threat(s): Pupu-pu'e National Park on `Upolu, which is unmanaged, was severely damaged by cyclones and is threatened by logging and cattle farming (Beichle and Maelzer 1985, Bellingham and Davis 1988, Elmqvist et al. 1994). These threats are likely to be operating throughout its range. It is likely to be a sedentary species and requires the protection of primary forest to secure its survival (Beichle in prep.).

Conservation Actions [top]

Conservation Actions: Conservation Actions Underway
The species occurs in Pupe-pu'e National Park.

Conservation Actions Proposed
Investigate population size to establish a baseline against which trends can be assessed. Manage and protect Pupu-pu'e National Park. Conduct a community education programme to promote animal husbandry practices which have minimal impact on the forest.

Citation: BirdLife International. 2016. Lalage sharpei. The IUCN Red List of Threatened Species 2016: e.T22706684A94083741. . Downloaded on 21 April 2018.
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