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); D1 |
| Year | Category | Criteria |
|---|---|---|
| 2020 | Vulnerable | C2a(i); D1 |
| 2016 | Near Threatened | C1+2a(i); D1 |
| 2012 | Near Threatened | C1+2a(i) |
| 2008 | Near Threatened | A3c; C1; C2a(i) |
| 2004 | Near Threatened | |
| 2000 | Lower Risk/Near Threatened | |
| 1994 | Lower Risk/Near Threatened | |
| 1988 | Near Threatened |
| Migratory status | not a migrant | Forest dependency | high |
| Land mass type |
land-mass type - shelf island |
Average mass | - |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence breeding/resident (km2) | 673,000 | medium |
| Number of locations | - | |
| Severely Fragmented | - |
| Value | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| No. of mature individuals | 500-999 | medium | estimated | 2020 |
| Population trend | decreasing | inferred | - | |
| Decline (3 years/1 generation past) | - | - | - | |
| Decline (5 years/1 generation past) | - | - | - | |
| Decline (10 years/1 generation past) | - | - | - | |
| Decline (10 years/3 generation future) | - | - | - | |
| Decline (10 years/3 generation past and future) | - | - | - | |
| Number of subpopulations | 2-100 | - | - | - |
| Percentage in largest subpopulation | 1-89 | - | - | - |
| Generation length (yrs) | 7.9 | - | - | - |
Population justification: The population was estimated in 2016 to be 1,000-2,250 individuals (R. Thorstrom in litt. 2016), which was roughly equivalent to 670-1,500 mature individuals. It is now estimated that there are fewer than 1,000 mature individuals (L. Rene de Roland in litt. 2020). The global population is therefore placed in the band of 500-999 mature individuals. The subpopulation structure is not known, but given the species's wide range and fragmented habitat, it is assumed that there are multiple subpopulations and that fewer than 89% of mature individuals are found in a single subpopulation.
Trend justification: The population is inferred to be in decline owing to ongoing deforestation. An analysis of remote-sensed data on deforestation between 2000 and 2012 (Tracewski et al. 2016) estimated a rate of forest loss of 10% over three generations for this species.
| Country/Territory | Presence | Origin | Resident | Breeding | Non-breeding | Passage |
|---|---|---|---|---|---|---|
| Madagascar | extant | native | yes |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Artificial/Terrestrial | Plantations | suitable | resident |
| Forest | Subtropical/Tropical Dry | major | resident |
| Forest | Subtropical/Tropical Moist Lowland | major | resident |
| Forest | Subtropical/Tropical Moist Montane | suitable | resident |
| Savanna | Dry | suitable | resident |
| Altitude | 0 - 1800 m | Occasional altitudinal limits |
| Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Agriculture & aquaculture | Annual & perennial non-timber crops - Small-holder farming | Timing | Scope | Severity | Impact | ||||
| Ongoing | Majority (50-90%) | Slow, Significant Declines | Medium Impact: 6 | ||||||
|
|||||||||
| Biological resource use | Logging & wood harvesting - Unintentional effects: (large scale) [harvest] | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
|||||||||
| Purpose | Primary form used | Life stage used | Source | Scale | Level | Timing |
|---|---|---|---|---|---|---|
| Pets/display animals, horticulture | - | - | international | non-trivial | recent |
Recommended citation
BirdLife International (2023) Species factsheet: Accipiter henstii. Downloaded from
http://datazone.birdlife.org/species/factsheet/hensts-goshawk-accipiter-henstii on 07/06/2023.
Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from
http://datazone.birdlife.org on 07/06/2023.
