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St Helena Plover Charadrius sanctaehelenae

IUCN Red List Criteria

Critically Endangered C2a(ii) 
Endangered
Vulnerable D1 

IUCN Red List history

Year Category
2012 Critically Endangered
2010 Critically Endangered
2009 Critically Endangered
2008 Critically Endangered
2007 Critically Endangered
2004 Vulnerable
2000 Endangered
1996 Endangered
1994 Endangered
1988 Threatened

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) 46 medium
Number of locations 11-100 -
Fragmentation -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals 50-249 good Estimated 2010
Population trend Increasing medium -
Number of subpopulations 1 - - -
Largest subpopulation - - -
Generation length (yrs) 5.2 - - -
Population justification: The population has been estimated at 200-220 mature individuals (T. Prater in litt. 2006). However, surveys in 2008 and 2010 found 373 and 397 mature individuals respectively, and the population also exceeded 250 mature individuals in 2007 (F. Burns in litt. 2008). Therefore, although a population estimate of 50-249 mature individuals is precautionarily retained here, if the number of mature individuals remains above this threshold over the five year period, without a continuing decline, it is likely to qualify for downlisting. This banded estimate is equivalent to 75-374 individuals in total, rounded here to 70-400 individuals.
Trend justification: Surveys in 1988-1989 (giving a total of c.450 individuals), repeated in 1998-1999, revealed large declines at all-important pastureland sites. Fieldwork in 1999-2000 and 2000-2001 suggested populations had stabilised at c.350 adults, but survey data from 2005 and 2006 showed further evidence of a decline with an estimated 200-220 mature individuals. A full survey in 2008 located 373 adults, an increase of 16% from 2007, and there was a further population increase to 397 adults in 2010, indicating that some recovery has taken place (F. Burns in litt. 2008, Ellick et al. in litt. 2010), although only 350 adults were counted in 2011 (E. Duff in litt. 2011). The cause of these apparent fluctuations is still unclear. An overall decline of 20-29% is estimated to have occurred within the last 16 years or three generations.

Country/Territory distribution

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

Important Bird Areas where this species has triggered the IBA criteria

Country/Territory IBA Name IBA link
St Helena (to UK) North-east St Helena site factsheet
St Helena (to UK) South-west St Helena site factsheet

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Arable Land marginal resident
Artificial/Terrestrial Pastureland major resident
Grassland Temperate major resident
Shrubland Subtropical/Tropical Dry suitable resident
Altitude 160 - 680 m Occasional altitudinal limits  

Threats & impact

Threat (level 1) Threat (level 2) Impact and Stresses
Human intrusions & disturbance Recreational activities Timing Scope Severity Impact
Ongoing Minority (<50%) Negligible declines Low Impact: 4
Stresses
Species disturbance, Reduced reproductive success
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Common Myna (Acridotheres tristis) Timing Scope Severity Impact
Ongoing Majority (50-90%) Negligible declines Low Impact: 5
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%) Negligible declines Low Impact: 5
Stresses
Reduced reproductive success
Invasive and other problematic species, genes & diseases Problematic native species/diseases Timing Scope Severity Impact
Past, Likely to Return Minority (<50%) Unknown Past Impact
Stresses
Reduced reproductive success
Natural system modifications Other ecosystem modifications Timing Scope Severity Impact
Ongoing Majority (50-90%) Very Rapid Declines High Impact: 8
Stresses
Ecosystem degradation
Residential & commercial development Commercial & industrial areas Timing Scope Severity Impact
Future Minority (<50%) Very Rapid Declines Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion
Residential & commercial development Housing & urban areas Timing Scope Severity Impact
Ongoing Minority (<50%) Rapid Declines Medium Impact: 6
Stresses
Ecosystem degradation, Ecosystem conversion
Residential & commercial development Tourism & recreation areas Timing Scope Severity Impact
Future Minority (<50%) Rapid Declines Low Impact: 4
Stresses
Species disturbance, Ecosystem degradation, Ecosystem conversion, Reduced reproductive success

Utilisation

Purpose Primary form used Life stage used Source Scale Level Timing
Sport Whole Adults and juveniles Wild Subsistence, National Non-trivial Recent

Recommended citation
BirdLife International (2014) Species factsheet: Charadrius sanctaehelenae. Downloaded from http://www.birdlife.org on 21/09/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 21/09/2014.

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 Critically Endangered
Family Charadriidae (Plovers)
Species name author (Harting, 1873)
Population size 50-249 mature individuals
Population trend Increasing
Distribution size (breeding/resident) 46 km2
Country endemic? Yes
Links to further information
- Summary information on this species