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 |
|---|---|---|
| - | - | C2a(i)b |
| Year | Category | Criteria |
|---|---|---|
| 2018 | Vulnerable | C2a(i)b |
| 2016 | Vulnerable | A2c+3c+4c;B1ab(i,ii,iii,iv,v)c(iv);C2a(i)b |
| 2012 | Vulnerable | A2c+3c+4c;B1ab(i,ii,iii,iv,v)c(iv);C2a(i)b |
| 2008 | Vulnerable | A2c; A3c; A4c; B1a+b(i,ii,iii,iv,v); C2a(i) |
| 2004 | Vulnerable | |
| 2000 | Vulnerable | |
| 1996 | Vulnerable | |
| 1994 | Vulnerable | |
| 1988 | Threatened |
| Migratory status | not a migrant | Forest dependency | Medium |
| Land mass type |
Land-mass type - continent |
Average mass | - |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence breeding/resident (km2) | 605,000 | medium |
| Number of locations | 11-100 | - |
| Severely Fragmented | - |
| Value | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| No. of mature individuals | 2500-9999 | poor | estimated | 2000 |
| Population trend | Decreasing | poor | 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 | - | - | - | |
| Generation length (yrs) | 4.8 | - | - | - |
Population justification: The population is estimated to number 2,500-9,999 mature individuals based on an assessment of known records, descriptions of abundance and range size. This is consistent with recorded population density estimates for congeners or close relatives with a similar body size, and the fact that only a proportion of the estimated Extent of Occurrence is likely to be occupied. This estimate is equivalent to 3,750-14,999 individuals, rounded here to 3,500-15,000 individuals.
Trend justification: This species's population is inferred to be declining as habitat within its range is lost.
| Country/Territory | Occurrence status | Presence | Resident | Breeding | Non-breeding | Passage |
|---|---|---|---|---|---|---|
| Argentina | N | Extant | Yes | |||
| Brazil | N | Extant | Yes |
| Country/Territory | IBA Name |
|---|---|
| Argentina | Parque Nacional Iguazú y alrededores |
| Argentina | Parque Provincial Urugua-í |
| Argentina | Parque Provincial Uruzú y Reserva Forestal San Jorge |
| Argentina | Alta cuenca del arroyo Alegría |
| Argentina | San Pedro |
| Argentina | Parque Provincial Piñalito y alrededores |
| Argentina | Parque Provincial Cruce Caballero |
| Brazil | Parque Estadual do Desengano e Entorno |
| Brazil | Serra dos Órgãos |
| Brazil | Campos Gerais do Paraná |
| Brazil | Parque Estadual do Rio Guarani |
| Brazil | Parque Nacional do Iguaçu |
| Brazil | São Francisco Xavier / Monte Verde |
| Brazil | Parque Estadual da Serra do Mar (entre Caraguatatuba e Picinguaba) |
| Brazil | Parque Estadual da Serra do Mar (entre Pedro de Toledo e Cubatão) |
| Brazil | Maciço Florestal de Paranapiacaba |
| Brazil | Guaraqueçaba / Jacupiranga / Cananéia |
| Brazil | Parque Nacional de Itatiaia |
| Brazil | Estação Ecológica de Juréia-Itatins |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Forest | Subtropical/Tropical Moist Lowland | major | resident |
| Altitude | 0 - 1200 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 | Majority (50-90%) | Slow, Significant Declines | Medium Impact: 6 | ||||||
|
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| Biological resource use | Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest] | Timing | Scope | Severity | Impact | ||||
| Ongoing | Majority (50-90%) | Negligible declines | Low Impact: 5 | ||||||
|
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| Energy production & mining | Mining & quarrying | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
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| Residential & commercial development | Housing & urban areas | Timing | Scope | Severity | Impact | ||||
| Ongoing | Majority (50-90%) | Slow, Significant Declines | Medium Impact: 6 | ||||||
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| Transportation & service corridors | Roads & railroads | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
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Recommended citation
BirdLife International (2023) Species factsheet: Biatas nigropectus. Downloaded from
http://www.birdlife.org on 24/03/2023.
Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 24/03/2023.
