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Gough Moorhen Gallinula nesiotis

IUCN Red List Criteria

Critically Endangered  
Endangered  
Vulnerable D2 

IUCN Red List history

Year Category
2012 Vulnerable
2010 Vulnerable
2008 Not Recognised
2004 Not Recognised
2000 Not Recognised
1994 Not Recognised
1988 Not Recognised

Species attributes

Migratory status not a migrant Forest dependency Does not normally occur in forest
Land mass type   Average mass -

Distribution

  Estimate Data quality
Extent of Occurrence breeding/resident (km2) 169 good
Number of locations 2 -
Fragmentation -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals 9000 good Estimated 1984
Population trend Increasing poor -
Number of subpopulations - - -
Largest subpopulation - - -
Generation length (yrs) 5.9 - - -
Population justification: The total population is estimated at 9,000 mature individuals based on past survey data, including 4,250 pairs on Gough based on 1983 data, and 250 pairs on Tristan in 1984 (P. G. Ryan in litt. 2000). This is roughly equivalent to 13,000-14,000 individuals in total.
Trend justification: In 1984, the Tristan population was estimated at c.250 pairs and increasing. It is now distributed throughout the island (P. G. Ryan in litt. 2000). Based on this information the population is suspected to still be increasing.

Country/Territory distribution

Country/Territory Occurrence status Presence Breeding Non-breeding Passage
St Helena (to UK) Native Extant      

Important Bird Areas where this species has triggered the IBA criteria

Country/Territory IBA Name IBA link
St Helena (to UK) Gough Island site factsheet
St Helena (to UK) Tristan Island site factsheet

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Grassland Subantarctic unset
Shrubland Subantarctic suitable resident
Wetlands (inland) Permanent Freshwater Marshes/Pools (under 8ha) suitable resident
Wetlands (inland) Permanent Rivers/Streams/Creeks (includes waterfalls) suitable resident
Wetlands (inland) Seasonal/Intermittent Freshwater Marshes/Pools (under 8ha) suitable resident
Altitude 0 - 500 m Occasional altitudinal limits  

Threats & impact

Threat (level 1) Threat (level 2) Impact and Stresses
Biological resource use Hunting & trapping terrestrial animals / Intentional use (species is the target) Timing Scope Severity Impact
Past, Unlikely to Return Majority (50-90%) Rapid Declines Past Impact
Stresses
Species mortality
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Black Rat (Rattus rattus) Timing Scope Severity Impact
Future Majority (50-90%) Rapid Declines Low Impact: 5
Stresses
Species mortality
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Domestic Cat (Felis catus) Timing Scope Severity Impact
Past, Unlikely to Return Majority (50-90%) Rapid Declines Past Impact
Stresses
Species mortality
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Domestic Pig (Sus domesticus) Timing Scope Severity Impact
Past, Unlikely to Return Majority (50-90%) Rapid Declines Past Impact
Stresses
Species mortality
Natural system modifications Fire & fire suppression / Trend Unknown/Unrecorded Timing Scope Severity Impact
Past, Unlikely to Return Majority (50-90%) Rapid Declines Past Impact
Stresses
Ecosystem degradation

Recommended citation
BirdLife International (2014) Species factsheet: Gallinula nesiotis. Downloaded from http://www.birdlife.org on 16/04/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 16/04/2014.

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 Vulnerable
Family Rallidae (Rails, crakes and allies)
Species name author P. Sclater, 1861
Population size 9000 mature individuals
Population trend Increasing
Distribution size (breeding/resident) 169 km2
Country endemic? Yes
Links to further information
- Summary information on this species