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New Caledonian Grassbird Megalurulus mariei

IUCN Red List history

Year Category
2012 Least Concern
2009 Least Concern
2008 Near Threatened
2004 Near Threatened
2000 Data Deficient
1994 Lower Risk/Least Concern
1988 Lower Risk/Least Concern

Species attributes

Migratory status not a migrant Forest dependency Low
Land mass type   Average mass 25 g

Distribution

  Estimate Data quality
Extent of Occurrence breeding/resident (km2) 16,400 medium
Number of locations -
Fragmentation -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals 1500-7000 poor Suspected 2004
Population trend Decreasing poor -
Number of subpopulations - - -
Largest subpopulation - - -
Generation length (yrs) 3.6 - - -
Population justification: The population is placed in the band 2,500-9,999 individuals, equating to 1,667-6,666 mature individuals, rounded here to 1,500-7,000 mature individuals.
Trend justification: The species's population is suspected to be stable as is not thought to have suffered from habitat loss and there is no evidence that it is susceptible to predation by invasive species.

Country/Territory distribution

Country/Territory Occurrence status Presence Breeding Non-breeding Passage Resident
New Caledonia (to France) Native Extant       Yes

Important Bird Areas where this species has triggered the IBA criteria

Country/Territory IBA Name IBA link
New Caledonia (to France) Boulinda site factsheet
New Caledonia (to France) Bwa Opana site factsheet
New Caledonia (to France) Dent de Saint-Vincent site factsheet
New Caledonia (to France) Entre les monts Nakada et Do site factsheet
New Caledonia (to France) Entre les monts Rembaï et Canala site factsheet
New Caledonia (to France) Entre Table Unio et Farino site factsheet
New Caledonia (to France) Forêt Plate site factsheet
New Caledonia (to France) Goro Até et haute vallée de la rivière Tchamba site factsheet
New Caledonia (to France) Goro Jé et haute vallée de la rivière Amoa site factsheet
New Caledonia (to France) Grand Koum site factsheet
New Caledonia (to France) Hautes vallées des rivières Néaoua, Koua et Kouaoua site factsheet
New Caledonia (to France) Massif des Lèvres site factsheet
New Caledonia (to France) Massif du Mé Kanin, Sphinx et Arago site factsheet
New Caledonia (to France) Massif du Panié site factsheet
New Caledonia (to France) Massifs du Grand Sud - entre le mont Humboldt et la rivière Bleue site factsheet
New Caledonia (to France) Mé Maoya site factsheet

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Subtropical/Tropical Heavily Degraded Former Forest suitable resident
Forest Subtropical/Tropical Moist Lowland suitable resident
Grassland Subtropical/Tropical Seasonally Wet/Flooded suitable resident
Savanna Dry suitable resident
Shrubland Subtropical/Tropical Moist major resident
Altitude 0 - 1000 m Occasional altitudinal limits  

Threats & impact

Threat (level 1) Threat (level 2) Impact and Stresses
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Black Rat (Rattus rattus) Timing Scope Severity Impact
Ongoing Majority (50-90%) Unknown Unknown
Stresses
Reduced reproductive success
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Domestic Cat (Felis catus) Timing Scope Severity Impact
Ongoing Majority (50-90%) Unknown Unknown
Stresses
Species mortality
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Polynesian Rat (Rattus exulans) Timing Scope Severity Impact
Ongoing Majority (50-90%) Unknown Unknown
Stresses
Reduced reproductive success
Natural system modifications Fire & fire suppression / Trend Unknown/Unrecorded Timing Scope Severity Impact
Ongoing Unknown Unknown Unknown
Stresses
Ecosystem degradation

Recommended citation
BirdLife International (2014) Species factsheet: Megalurulus mariei. Downloaded from http://www.birdlife.org on 22/12/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 22/12/2014.

This information is based upon, and updates, the information published in BirdLife International (2000) Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004) Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.

To provide new information to update this factsheet or to correct any errors, please email BirdLife

To contribute to discussions on the evaluation of the IUCN Red List status of Globally Threatened Birds, please visit BirdLife's Globally Threatened Bird Forums.

Key facts
Current IUCN Red List category Least Concern
Family Sylviidae (Old World warblers)
Species name author Verreaux, 1869
Population size 1500-7000 mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 16,400 km2
Country endemic? Yes
Links to further information
- Summary information on this species