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. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
del Hoyo, J.; Collar, N. J.; Christie, D. A.; Elliott, A.; Fishpool, L. D. C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Barcelona, Spain and Cambridge UK: Lynx Edicions and BirdLife International.
| Critically Endangered | Endangered | Vulnerable |
|---|---|---|
| - | C2a(i); D | C2a(i); D1 |
| Year | Category | Criteria |
|---|---|---|
| 2016 | Endangered | C2a(i); D |
| 2012 | Vulnerable | C2a(i);D1 |
| 2008 | Vulnerable | C2a(i); D1 |
| 2007 | Vulnerable | |
| 2004 | Vulnerable | |
| 2000 | Vulnerable | |
| 1994 | Not Recognised | |
| 1988 | Not Recognised |
| Migratory status | not a migrant | Forest dependency | Does not normally occur in forest |
| Land mass type |
Land-mass type - shelf island |
Average mass | - |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence breeding/resident (km2) | 707,000 | medium |
| Number of locations | 11-100 | - |
| Fragmentation | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| No. of mature individuals | 100-249 | poor | suspected | 2016 |
| Population trend | Decreasing | poor | suspected | - |
| Decline (3 years/1 generation past) | - | - | - | |
| Decline (5 years/1 generation past) | - | - | - | |
| Decline (10 years/1 generation past) | - | - | - | |
| Decline (10 years/3 generation future) | 10-19 | - | - | - |
| Decline (10 years/3 generation past and future) | - | - | - | |
| Number of subpopulations | 2-100 | - | - | - |
| Largest subpopulations | 1-89 | - | - | - |
| Generation length (yrs) | 6 | - | - | - |
Population justification: Surveys in 2005-2006 of 71% of the potential harrier habitat in Madagascar recorded a total of 80 individuals. The population on Comoros (three separate subpopulations on Grande Comore, Moheli and Anjouan), where its habitat is nearly totally destroyed, is estimated at no more than 50 mature individuals (R. Thorstrom and L.-A. Rene de Roland in litt. 2007). The total population is here estimated to be less than 250 mature individuals (R. Thorstrom in litt. 2016), placed in the range of 100-249 mature individuals.
Trend justification: The population is suspected to be in moderate decline on the basis of the loss and degradation of breeding habitat, persecution and disturbance.
| Country/Territory | Occurrence status | Presence | Resident | Breeding | Non-breeding | Passage |
|---|---|---|---|---|---|---|
| Comoros | N | Extant | Yes | |||
| Madagascar | N | Extant | Yes | |||
| Mayotte (to France) | N | Possibly Extinct | Yes |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Artificial/Terrestrial | Arable Land | suitable | resident |
| Grassland | Subtropical/Tropical Dry | suitable | resident |
| Grassland | Subtropical/Tropical High Altitude | major | resident |
| Grassland | Subtropical/Tropical Seasonally Wet/Flooded | suitable | resident |
| Marine Coastal/Supratidal | Coastal Freshwater Lakes | suitable | resident |
| Wetlands (inland) | Bogs, Marshes, Swamps, Fens, Peatlands | suitable | resident |
| Wetlands (inland) | Permanent Freshwater Lakes (over 8ha) | suitable | resident |
| Altitude | 0 - 2000 m | Occasional altitudinal limits | (max) 3000 m |
| 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 | ||||||
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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%) | Slow, Significant Declines | Medium Impact: 6 | ||||||
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| Biological resource use | Hunting & trapping terrestrial animals - Persecution/control | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Negligible declines | Low Impact: 4 | ||||||
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| Human intrusions & disturbance | Work & other activities | Timing | Scope | Severity | Impact | ||||
| Ongoing | Majority (50-90%) | No decline | Low Impact: 5 | ||||||
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| Natural system modifications | Fire & fire suppression - Trend Unknown/Unrecorded | Timing | Scope | Severity | Impact | ||||
| Ongoing | Majority (50-90%) | Slow, Significant Declines | Medium Impact: 6 | ||||||
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Recommended citation
BirdLife International (2021) Species factsheet: Circus macrosceles. Downloaded from
http://www.birdlife.org on 07/03/2021.
Recommended citation for factsheets for more than one species: BirdLife International (2021) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 07/03/2021.
