LC
Polynesian Triller Lalage maculosa



Taxonomy

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.

IUCN Red List criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - -

Red List history
Year Category Criteria
2024 Least Concern
2016 Least Concern
2012 Least Concern
2009 Least Concern
2008 Least Concern
2004 Least Concern
2000 Lower Risk/Least Concern
1994 Lower Risk/Least Concern
1988 Lower Risk/Least Concern
Species attributes

Migratory status not a migrant Forest dependency medium
Land-mass type Average mass -
Range

Estimate Data quality
Extent of Occurrence (breeding/resident) 2,100,000 km2
Severely fragmented? no -
Population
Estimate Data quality Derivation Year of estimate
Population size unknown - - -
Population trend decreasing - suspected -
Generation length 3.57 years - - -

Population justification: The global population size has not been quantified, but the species is described as widespread and common (del Hoyo et al. 2005). This species is considered to have a medium dependency on forest habitat, and tree cover is estimated to have declined by 1.8% within its mapped range over the past 10 years (Global Forest Watch 2022, using Hansen et al. [2013] data and methods disclosed therein). Therefore, as a precautionary measure, it is tentatively suspected that this loss of cover may have led to a decline of between 1-19% in the species' population size over the same time frame.

Trend justification:   .


Country/territory distribution
Country/Territory Presence Origin Resident Breeding visitor Non-breeding visitor Passage migrant
Fiji extant native yes
Niue (to New Zealand) extant native yes
Samoa extant native yes
Solomon Islands extant native yes
Tonga extant native yes
Vanuatu extant native yes
Wallis and Futuna Islands (to France) extant native yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Fiji East Kadavu
Fiji Greater Tomaniivi
Fiji Koroyanitu / Vaturu
Fiji Nabukelevu
Fiji Natewa/Tunuloa Peninsula
Fiji Ogea
Fiji Rairaimatuku Highlands
Fiji Rotuma
Fiji Sovi Basin
Fiji Taveuni Highlands
Fiji Viti Levu Southern Highlands
Fiji Wailevu/Dreketi Highlands
Niue (to New Zealand) Huvalu and environs
Samoa Aleipata Marine Protected Area
Samoa Apia Catchments
Samoa Central Savaii Rainforest
Samoa Eastern Upolu Craters
Samoa O Le Pupu-Pu'e National Park
Samoa Uafato-Tiavea Forest
Solomon Islands Vanikoro
Tonga Late
Tonga Tofua and Kao
Vanuatu Ambae
Wallis and Futuna Islands (to France) Alofi

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Subtropical/Tropical Heavily Degraded Former Forest suitable resident
Artificial/Terrestrial Urban Areas suitable resident
Forest Subtropical/Tropical Moist Lowland major resident
Forest Subtropical/Tropical Moist Montane suitable resident
Altitude 0 - 1740 m Occasional altitudinal limits  

Recommended citation
BirdLife International (2024) Species factsheet: Polynesian Triller Lalage maculosa. Downloaded from https://datazone.birdlife.org/species/factsheet/polynesian-triller-lalage-maculosa on 23/12/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from https://datazone.birdlife.org/species/search on 23/12/2024.