Data Zone
Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A., Fishpool, L.D.C., Boesman, P. and Kirwan, G.M. 2016. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 2: Passerines. Lynx Edicions and BirdLife International, Barcelona, Spain and Cambridge, UK.
SACC. 2005 and updates. A classification of the bird species of South America. Available at: #http://www.museum.lsu.edu/~Remsen/SACCBaseline.htm#.
| Critically Endangered | Endangered | Vulnerable |
|---|---|---|
| - | - | - |
| Year | Category | Criteria |
|---|---|---|
| 2021 | Least Concern | |
| 2016 | Near Threatened | A3c |
| 2012 | Near Threatened | A3c |
| 2009 | Least Concern | |
| 2008 | Least Concern | |
| 2004 | Least Concern | |
| 2000 | Lower Risk/Least Concern | |
| 1994 | Lower Risk/Near Threatened | |
| 1988 | Threatened |
| Migratory status | not a migrant | Forest dependency | High |
| Land mass type | Average mass | 31 g |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence breeding/resident (km2) | 949,000 | medium |
| Number of locations | - | |
| Severely Fragmented | - |
| Value | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| No. of mature individuals | unknown | not applicable | not applicable | 0 |
| 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) | 1-19 | - | - | - |
| Decline (10 years/3 generation past and future) | 1-19 | - | - | - |
| Number of subpopulations | - | - | - | |
| Percentage in largest subpopulation | - | - | - |
Population justification: The population size has not been quantified, but this species is described as 'common' (Stotz et al. 1996) or 'fairly common' (Whittaker 2009). The subpopulation structure is unknown.
Trend justification: Remote sensing data indicates that approximately 6.5% of tree cover with at least 50% canopy cover was lost from the species's range over the past decade to 2020 (Global Forest Watch 2021). Based on the rate of forest loss over the past four years (Global Forest Watch 2021), and assuming deforestation continues at the same pace, it is projected that 8% of the species's habitat may be lost over the next decade. An analysis of the impact of forest degradation in northeast Amazonia found that it contributes, on average, an additional 51% decline in biodiversity (Barlow et al. 2016). This species is dependent on forest and is considered sensitive to disturbance (Zimmer and Isler 2020), so its population size may be declining at a faster rate than that suggested by the rate of tree cover loss. The species's population size is nevertheless suspected to be declining by less than 20% per decade.
| Country/Territory | Occurrence status | Presence | Resident | Breeding | Non-breeding | Passage |
|---|---|---|---|---|---|---|
| Brazil | N | Extant | Yes |
| Country/Territory | IBA Name |
|---|---|
| Brazil | Ji-Paraná / Roosevelt |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Forest | Subtropical/Tropical Moist Lowland | major | resident |
| Altitude | 0 - 300 m | Occasional altitudinal limits |
| Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Agriculture & aquaculture | Annual & perennial non-timber crops - Agro-industry farming | Timing | Scope | Severity | Impact | ||||
| Ongoing | Majority (50-90%) | Slow, Significant Declines | Medium Impact: 6 | ||||||
|
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| Agriculture & aquaculture | Annual & perennial non-timber crops - Small-holder farming | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Rapid Declines | Medium Impact: 6 | ||||||
|
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| Agriculture & aquaculture | Livestock farming & ranching - Agro-industry grazing, ranching or farming | Timing | Scope | Severity | Impact | ||||
| Ongoing | Majority (50-90%) | Slow, Significant Declines | Medium Impact: 6 | ||||||
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| Biological resource use | Logging & wood harvesting - Unintentional effects: (large scale) [harvest] | Timing | Scope | Severity | Impact | ||||
| Ongoing | Majority (50-90%) | Slow, Significant Declines | Medium Impact: 6 | ||||||
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| Energy production & mining | Mining & quarrying | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Negligible declines | Low Impact: 4 | ||||||
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| Energy production & mining | Renewable energy | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Rapid Declines | Medium Impact: 6 | ||||||
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| Transportation & service corridors | Roads & railroads | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Rapid Declines | Medium Impact: 6 | ||||||
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Recommended citation
BirdLife International (2022) Species factsheet: Rhegmatorhina hoffmannsi. Downloaded from
http://www.birdlife.org on 02/12/2022.
Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 02/12/2022.
