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Mao Gymnomyza samoensis

IUCN Red List Criteria

Critically Endangered  
Endangered B1ab(ii,iii,v);C2a(i) 
Vulnerable B1ab(ii,iii,v);C2a(i);D1 

IUCN Red List history

Year Category
2012 Endangered
2008 Endangered
2004 Endangered
2000 Endangered
1996 Vulnerable
1994 Vulnerable
1988 Lower Risk/Least Concern

Species attributes

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

Distribution

  Estimate Data quality
Extent of Occurrence breeding/resident (km2) 1,200 medium
Number of locations 11-100 -
Fragmentation -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals 250-999 medium Estimated 2005
Population trend Decreasing poor -
Number of subpopulations 2-100 - - -
Largest subpopulation 220-890 - - -
Generation length (yrs) 5.8 - - -
Population justification: Tipanaa (in litt. 2007) indicates a population size of c.500 individuals, which is best placed in the band 250-999 mature individuals. This equates to 375-1,499 individuals in total, rounded here to 350-1,500 individuals.
Trend justification: The species is suspected to be undergoing a moderate decline owing to habitat degradation and predation by introduced mammals, which is on-going.

Country/Territory distribution

Country/Territory Occurrence status Presence Breeding Non-breeding Passage Resident
American Samoa Unknown Extinct       Yes
Samoa Native Extant Yes      

Important Bird Areas where this species has triggered the IBA criteria

Country/Territory IBA Name IBA link
Samoa Apia Catchments site factsheet
Samoa Central Savaii Rainforest site factsheet
Samoa Eastern Upolu Craters site factsheet
Samoa O Le Pupu-Pu'e National Park site factsheet
Samoa Uafato-Tiavea Forest site factsheet

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Moist Lowland major resident
Forest Subtropical/Tropical Moist Montane major resident
Shrubland Subtropical/Tropical High Altitude marginal resident
Altitude 760 - 1500 m Occasional altitudinal limits  

Threats & impact

Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Annual & perennial non-timber crops / Small-holder farming Timing Scope Severity Impact
Ongoing Whole (>90%) Slow, Significant Decline Medium Impact: 7
Stresses
Ecosystem degradation, Ecosystem conversion
Climate change & severe weather Storms & flooding Timing Scope Severity Impact
Past, Likely to Return Majority (50-90%) Very Rapid Declines Past Impact
Stresses
Ecosystem degradation
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Unspecified eucalyptus (Eucalyptus spp.) Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Decline Medium Impact: 6
Stresses
Ecosystem degradation
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Unspecified pines (Pinus spp.) Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Decline Medium Impact: 6
Stresses
Ecosystem degradation
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Unspecified rats (Rattus spp.) Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Decline Medium Impact: 6
Stresses
Reduced reproductive success, Species mortality
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Unspecified species Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Decline Medium Impact: 6
Stresses
Ecosystem degradation

Recommended citation
BirdLife International (2014) Species factsheet: Gymnomyza samoensis. Downloaded from http://www.birdlife.org on 20/09/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 20/09/2014.

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 Endangered
Family Meliphagidae (Honeyeaters)
Species name author (Hombron & Jacquinot, 1841)
Population size 250-999 mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 1,200 km2
Country endemic? Yes
Links to further information
- Summary information on this species