Data Zone
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 |
|---|---|---|
| - | C2a(ii) | C2a(i,ii); D1 |
| Year | Category | Criteria |
|---|---|---|
| 2020 | Endangered | C2a(ii) |
| 2018 | Near Threatened | A2cd+3cd+4cd |
| 2016 | Near Threatened | A2cd+3cd |
| 2012 | Near Threatened | A2cd+3cd+4cd |
| 2009 | Least Concern | |
| 2008 | Least Concern | |
| 2004 | Least Concern | |
| 2000 | Lower Risk/Least Concern | |
| 1994 | Lower Risk/Least Concern | |
| 1988 | Lower Risk/Least Concern |
| Migratory status | not a migrant | Forest dependency | does not normally occur in forest |
| Land-mass type | Average mass | - |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence (breeding/resident) | 415,000 km2 | medium |
| Severely fragmented? | no | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Population size | 780-1643 mature individuals | poor | estimated | 2016 |
| Population trend | decreasing | - | inferred | 2010-2024 |
| Rate of change over the past 10 years/3 generations (longer of the two periods) | 20-29% | - | - | - |
| Rate of change over the future 10 years/3 generations (longer of the two periods) | 20-29% | - | - | - |
| Rate of change over the past & future 10 years/3 generations (longer of the two periods) | 20-29% | - | - | - |
| Generation length | 4.6 years | - | - | - |
| Number of subpopulations | 1 | - | - | - |
| Percentage of mature individuals in largest subpopulation | 100% | - | - | - |
Population justification: The population is estimated to number 975-2,064 individuals, roughly equating to 780-1,643 mature individuals. In 2016, surveys observed 135 jacana, of which 108 were mature, and 27 were juveniles. The jacana were observed at a mean population density of 3.5 ± 0.74 [SE] individuals per hectare (D'Urban Jackson et al., 2019). Genetic analysis by D'Urban Jackson (2018) found no genetic sub-structuring, and as such the jacana are considered to exist in one subpopulation.
Trend justification: The population appears to have become increasingly rare in suitable habitat (P. Morris in litt. 2010, L.-A. Réné de Roland in litt. 2012). It is inferred to be in moderately rapid decline owing to ongoing habitat destruction and degradation within its restricted habitat range, as well as hunting pressure (del Hoyo et al. 1996, P. Morris in litt. 2010, L.-A. Réné de Roland in litt. 2012, G. Young in litt. 2012, D'Urban Jackson et al., 2019).
| Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
|---|---|---|---|---|---|---|
| Madagascar | extant | native | yes |
| Country/Territory | IBA Name |
|---|---|
| Madagascar | Baly Bay National Park |
| Madagascar | Bemamba Wetland Complex |
| Madagascar | Cap Saint André forest and wetlands |
| Madagascar | Coastal area East of Antsiranana |
| Madagascar | Lake Ihotry - Mangoky Delta Complex NPA |
| Madagascar | Lake Sahaka - Analabe NPA and extension |
| Madagascar | Maevatanana - Ambato-Boeny wetlands |
| Madagascar | Manambolomaty wetland complex and Tsimembo Classified Forest |
| Madagascar | Menabe forest complex |
| Madagascar | Mikea |
| Madagascar | Port-Bergé Wetlands NPA and extension |
| Madagascar | Tambohorano Wetland NPA |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Artificial/Aquatic & Marine | Artificial/Aquatic - Ponds (below 8ha) | suitable | resident |
| Wetlands (inland) | Permanent Freshwater Lakes (over 8ha) | 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 Lakes (over 8ha) | suitable | resident |
| Wetlands (inland) | Seasonal/Intermittent Freshwater Marshes/Pools (under 8ha) | suitable | resident |
| Altitude | 0 - 750 m | Occasional altitudinal limits |
| Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Agriculture & aquaculture | Annual & perennial non-timber crops - Scale Unknown/Unrecorded | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
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| Biological resource use | Fishing & harvesting aquatic resources - Unintentional effects: (subsistence/small scale) [harvest] | 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 | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
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| Natural system modifications | Dams & water management/use - Abstraction of surface water (unknown use) | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
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| Pollution | Agricultural & forestry effluents - Soil erosion, sedimentation | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
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Recommended citation
BirdLife International (2024) Species factsheet: Madagascar Jacana Actophilornis albinucha. Downloaded from
https://datazone.birdlife.org/species/factsheet/madagascar-jacana-actophilornis-albinucha on 23/12/2024.
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 23/12/2024.