Taxonomic note
Alopecoenas sanctaecrucis (del Hoyo and Collar 2014) was previously placed in the genus Gallicolumba.
Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 1: Non-passerines. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
Critically Endangered | Endangered | Vulnerable |
---|---|---|
- | D | B1ab(ii,iii,v)+2ab(ii,iii,v); D1 |
Year | Category | Criteria |
---|---|---|
2018 | Endangered | D |
2016 | Endangered | B1ab(ii,iii,v) |
2013 | Endangered | B1ab(ii,iii,v) |
2012 | Endangered | B1ab(ii,iii,v) |
2008 | Endangered | B1a+b(ii,iii,v) |
2004 | Endangered | |
2000 | Endangered | |
1996 | Vulnerable | |
1994 | Vulnerable | |
1988 | Threatened |
Migratory status | not a migrant | Forest dependency | medium |
Land-mass type | Average mass | - |
Estimate | Data quality | |
---|---|---|
Extent of Occurrence (breeding/resident) | 17,200 km2 | medium |
Number of locations | 2 | - |
Severely fragmented? | no | - |
Estimate | Data quality | Derivation | Year of estimate | |
---|---|---|---|---|
Population size | 218-1070 mature individuals | poor | estimated | 2018 |
Population trend | decreasing | poor | inferred | 1998-2008 |
Rate of change over the past 10 years/3 generations (longer of the two periods) | 10-19% | - | - | - |
Generation length | 6.6 years | - | - | - |
Number of subpopulations | 2 | - | - | - |
Population justification:
The population size has previously been listed as 600-1,700 mature individuals. It is probably now much smaller as a result of the losses from Tinakula, and given that it was only a rough estimate, the population size may have been smaller than this in the first place. As the species is only very rarely recorded on Espiritu Santo, the population size there could be very small. Using the lowest population densities of former congeners (genus Gallicolumba) and assuming only a proportion of its range in Espiritu Santo is occupied would give a population size there in the range 210-1,055 mature individuals.
The recent survey on Tinakula found 15 individuals – 11 males and 4 females, although it is not certain whether these were all mature individuals (although Baptista et al. [2018] describe a different plumage colouration in juveniles, so it is possible that all counted individuals may be mature), and it is not known whether this is the total population on the island, or whether there may be some other individuals present still. The skew in the sex ratio of individuals found means that a lower population size should be used (per IUCN Standards and Petitions Subcommittee 2017), but again it is unknown whether it is possible for all individuals in this very small population to successfully breed. Given the uncertainty, it is very tentatively suggested that the population size for Tinakula be assessed as 8-15 mature individuals. This would then give an overall global population in the range 218-1,070 mature individuals, equating roughly to 300-1,600 individuals in total.
Trend justification: While the eruption of the volcano on Tinakula in 2017 has caused a large one-off population reduction, any remaining population on Espiritu Santo is also likely to be undergoing a continuing decline due to the ongoing threats of introduced mammals and habitat loss.
Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
---|---|---|---|---|---|---|
Solomon Islands | extant | native | yes | |||
Vanuatu | extant | native | yes |
Country/Territory | IBA Name |
---|---|
Vanuatu | Santo Mountain Chain |
Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
---|---|---|---|
Artificial/Terrestrial | Pastureland | suitable | non-breeding |
Forest | Subtropical/Tropical Moist Lowland | major | resident |
Altitude | 60 - 1000 m | Occasional altitudinal limits |
Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
---|---|---|---|---|---|---|---|---|---|
Agriculture & aquaculture | Annual & perennial non-timber crops - Shifting agriculture | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
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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 | ||||||
|
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Biological resource use | Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest] | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
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Geological events | Volcanoes | Timing | Scope | Severity | Impact | ||||
Ongoing | Majority (50-90%) | Rapid Declines | Medium Impact: 7 | ||||||
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Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Canis familiaris | Timing | Scope | Severity | Impact | ||||
Ongoing | Majority (50-90%) | Slow, Significant Declines | Medium Impact: 6 | ||||||
|
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Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Felis catus | Timing | Scope | Severity | Impact | ||||
Ongoing | Majority (50-90%) | Slow, Significant Declines | Medium Impact: 6 | ||||||
|
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Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Merremia peltata | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
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Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Named species | Timing | Scope | Severity | Impact | ||||
Ongoing | Majority (50-90%) | Slow, Significant Declines | Medium Impact: 6 | ||||||
|
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Invasive and other problematic species, genes & diseases | Invasive non-native/alien species/diseases - Sus domesticus | Timing | Scope | Severity | Impact | ||||
Ongoing | Majority (50-90%) | Slow, Significant Declines | Medium Impact: 6 | ||||||
|
Purpose | Scale |
---|---|
Food - human | subsistence, national |
Recommended citation
BirdLife International (2024) Species factsheet: Santa Cruz Ground Dove Pampusana sanctaecrucis. Downloaded from
https://datazone.birdlife.org/species/factsheet/santa-cruz-ground-dove-pampusana-sanctaecrucis on 24/12/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from
https://datazone.birdlife.org/species/search on 24/12/2024.