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Sao Tome Green-pigeon Treron sanctithomae

IUCN Red List Criteria

Critically Endangered  
Endangered  
Vulnerable A2cd+3cd+4cd;C2a(ii) 

IUCN Red List history

Year Category
2012 Vulnerable
2011 Vulnerable
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 -

Distribution

  Estimate Data quality
Extent of Occurrence breeding/resident (km2) 860 medium
Number of locations -
Fragmentation -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals 2500-9999 poor Estimated 2011
Population trend Decreasing poor -
Number of subpopulations 1 - - -
Largest subpopulation 2500-9999 - - -
Generation length (yrs) 4.2 - - -
Population justification: The population is suspected to number fewer than 10,000 mature individuals (R. F. de Lima in litt. 2011). It is placed in the band 2,500-9,999 mature individuals, equating to 3,750-14,999 individuals in total, rounded here to 3,500-15,000 individuals.
Trend justification: A population decline of 30-49 % is suspected owing to hunting pressure: the species has disappeared or become scarce in easily accessible areas and hunters have reported capture rates less than half of those five years previously (F. Olmos, M. Carvalho & R. F. de Lima in litt. 2009, 2011).

Country/Territory distribution

Country/Territory Occurrence status Presence Breeding Non-breeding Passage Resident
São Tomé e Príncipe Native Extant       Yes

Important Bird Areas where this species has triggered the IBA criteria

Country/Territory IBA Name IBA link
São Tomé e Príncipe São Tomé lowland forests site factsheet
São Tomé e Príncipe São Tomé montane and cloud-forests site factsheet

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Plantations suitable resident
Artificial/Terrestrial Subtropical/Tropical Heavily Degraded Former Forest suitable resident
Forest Subtropical/Tropical Moist Lowland suitable resident
Altitude 300 - 1600 m Occasional altitudinal limits  

Threats & impact

Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Wood & pulp plantations / Small-holder plantations Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion
Biological resource use Hunting & trapping terrestrial animals / Intentional use (species is the target) Timing Scope Severity Impact
Ongoing Majority (50-90%) Rapid Declines Medium Impact: 7
Stresses
Species mortality

Utilisation

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

Recommended citation
BirdLife International (2014) Species factsheet: Treron sanctithomae. Downloaded from http://www.birdlife.org on 22/11/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 22/11/2014.

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 Columbidae (Pigeons, Doves)
Species name author (Gmelin, 1789)
Population size 2500-9999 mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 860 km2
Country endemic? Yes
Links to further information
- Summary information on this species