Current view: Data table and detailed info
Taxonomic note
Treron pompadora, T. affinis, T. chloropterus, T. phayrei, T. axillaris and T. aromaticus (del Hoyo and Collar 2014) were previously lumped as T. pompadora following Sibley and Monroe (1990, 1993).
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.
IUCN Red List criteria met and history
Red List criteria met
Red List history
| Migratory status |
not a migrant |
Forest dependency |
high |
| Land-mass type |
|
Average mass |
234 g |
Population justification: No published direct population estimates are known. An approach using remote-sensed habitat data to infer the area of suitable habitat within the range at two points in time (6,105 km2 and 6,097 km2), then applying a predicted density value for the species (7.2 individuals/km2) gives an inferred population size of 44,029 and 43,570 individuals (Santini et al. 2019). However, the impact of hunting, noted to be severe in the Nicobar Islands (Pande et al. 2007) is not included in these values, hence the appropriate density may be considerably lower and the population correspondingly smaller. Given the extent of the range and the observation that the species is 'fairly common' even in agricultural landscapes on South Andaman (Gokulakrishnan et al. 2015), it is still believed that the overall population is more likely to exceed 10,000 mature individuals than not, but this is an uncertain estimate.
The number of subpopulations is uncertain: the species is considered monotypic but based on the range it is likely that there are a minimum of two separate subpopulations (Andaman and Nicobar Islands) at the very least. Potentially the species is a competent disperser, as noted for other Treron species, but there remains the possibility of much greater subdivision within the total population given the large number of occupied islands spread over a considerable distance.
Analysis of the relative proportion of eBird checklists including the species in each year between 2014-2019 suggest that the population is declining (State of India's Birds 2020). The rate of reduction is uncertain: the annual rate of change from the model was -10.81% plus or minus 6.67% (State of India's Birds 2020), which would equate to a reduction of 43-92% over three generations. However, there has been no indication of a severe decline from the extent of records that continue to be supplied to eBird (eBird 2021), and the proportion of lists on which the species is recorded also does not appear to have radically altered. Hence there is a very considerable uncertainty over the population trend. On Narcondam Island fieldwork in 2019-2020 failed to record the species (Naniwadekar et al. 2021), when it was present in 2007 (Pande et al. 2007).
Trend justification: State of India's Birds (2020) deduce from relative proportions of occurrence records on eBird checklists that this species may currently be declining at a rate of 10.81% annually, with a confidence interval of 6.67%. This would equate to a reduction of 43-92% over three generations. However, the extent of records that continue to be supplied to eBird does not suggest a rapid decline and the proportion of lists on which the species is recorded also appears similar (eBird 2021) creating considerable difficulty in interpreting the reported reduction. It is apparent that the sample size used for the initial time period is very small relative to the later period, and as such it is clear that no statistically significant trend can be detected from the raw data. A particular problem is a lack of any sufficiently severe threat: hunting impacts may be considerable in the Nancowry group but not elsewhere in the range (Pande et al. 2007, del Hoyo et al. 2020). The species may no longer be present on Narcondam: fieldwork in 2019-2020 failed to record it (Naniwadekar et al. 2021), while surveys in 2007 did report it (Pande et al. 2007). Overall, it is suspected that there is a moderate to rapid population reduction occurring, but not at the rates reported by State of India's Birds (2020) and this rate is most likely not sufficiently rapid to exceed the thresholds for listing as Vulnerable.
Country/territory distribution
Important Bird and Biodiversity Areas (IBA)
Recommended citation
BirdLife International (2024) Species factsheet: Andaman Green-pigeon Treron chloropterus. Downloaded from
https://datazone.birdlife.org/species/factsheet/andaman-green-pigeon-treron-chloropterus on 22/12/2024.
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 22/12/2024.
