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: https://www.museum.lsu.edu/~Remsen/SACCBaseline.htm.
Critically Endangered | Endangered | Vulnerable |
---|---|---|
- | - | C2a(i) |
Year | Category | Criteria |
---|---|---|
2023 | Near Threatened | C2a(i) |
2016 | Near Threatened | A2c+3c+4c |
2012 | Near Threatened | A2c+3c+4c |
2008 | Near Threatened | A2c; A3c; A4c |
2004 | Near Threatened | |
2000 | Vulnerable | |
1996 | Vulnerable | |
1994 | Vulnerable | |
1988 | Threatened |
Migratory status | not a migrant | Forest dependency | high |
Land-mass type |
continent |
Average mass | - |
Estimate | Data quality | |
---|---|---|
Extent of Occurrence (breeding/resident) | 856,000 km2 | medium |
Severely fragmented? | no | - |
Estimate | Data quality | Derivation | Year of estimate | |
---|---|---|---|---|
Population size | 2500-9999 mature individuals | poor | suspected | 2004 |
Population trend | decreasing | poor | inferred | 2017-2027 |
Rate of change over the past 10 years/3 generations (longer of the two periods) | 10-19% | - | - | - |
Rate of change over the future 10 years/3 generations (longer of the two periods) | 10-19% | - | - | - |
Rate of change over the past & future 10 years/3 generations (longer of the two periods) | 10-19% | - | - | - |
Generation length | 2.22 years | - | - | - |
Number of subpopulations | 4-100 | - | - | - |
Percentage of mature individuals in largest subpopulation | 1-89% | - | - | - |
Population justification: The species' stronghold appears to be in the Serra do Mar in Brazil where it is considered fairly common, while it is described as uncommon or rare in Paraguay and Argentina (see eBird 2023). In Argentina, the population numbers less than 2,500 mature individuals (MAyDS and AA 2017).
The overall population size has not been quantified, but it has been suspected that it may number fewer than 10,000 individuals (del Hoyo et al. 2004, Fitzpatrick 2022). In the absence of a recent estimate the population is therefore tentatively placed in the band 2,500-9,999 mature individuals, though an accurate quantification is urgently required.
Trend justification: The population trend has not been investigated. However, observational records suggest that the population has undergone declines particularly in the Argentinian and Paraguayan part of its range, where records have become increasingly infrequent over the past decades and the range appears to have contracted considerably (eBird 2023). Population declines are likely driven by forest loss and fragmentation (Fitzpatrick 2022). Habitat loss appears more extensive in Paraguay and Argentina, while in the Serra do Mar in Brazil large areas of forest remain (Global Forest Watch 2023).
Overall within the range, 8-9% of tree cover is lost over ten years (Global Forest Watch 2023, using Hansen et al. [2013] data and methods disclosed therein). Due to the additive impacts of forest degradation and fragmentation population declines are likely steeper than the rate of tree cover loss suggests; they are here tentatively placed in the band 10-19% over ten years. It is however noted that the rate of decline may vary locally, with steeper declines suspected in the western part of the range and slower declines or even stable populations in the east.
Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
---|---|---|---|---|---|---|
Argentina | extant | native | yes | |||
Brazil | extant | native | yes | |||
Paraguay | extant | native | yes |
Country/Territory | IBA Name |
---|---|
Argentina | Alta cuenca del arroyo Alegría |
Argentina | Campo San Juan |
Argentina | Parque Nacional Iguazú y alrededores |
Argentina | Parque Provincial Uruzú y Reserva Forestal San Jorge |
Argentina | Reserva de la Biósfera Yabotí |
Argentina | Reserva Privada Yaguaroundí |
Argentina | San Antonio |
Argentina | San Pedro |
Brazil | Estação Ecológica de Juréia-Itatins |
Brazil | Parque Estadual da Serra do Mar (entre Caraguatatuba e Picinguaba) |
Paraguay | Bosque Mbaracayú |
Paraguay | Estancia Itabó |
Paraguay | Ka'aguy Rory |
Paraguay | Parque Nacional Caazapá |
Paraguay | Parque Nacional San Rafael |
Paraguay | Serranías de San Joaquín |
Paraguay | Ybyturuzú |
Paraguay | Ypeti |
Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
---|---|---|---|
Forest | Subtropical/Tropical Moist Lowland | major | resident |
Altitude | 0 - 500 m | Occasional altitudinal limits | (max) 1000 m |
Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
---|---|---|---|---|---|---|---|---|---|
Agriculture & aquaculture | Annual & perennial non-timber crops - Agro-industry farming | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
|||||||||
Agriculture & aquaculture | Wood & pulp plantations - Agro-industry plantations | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
|||||||||
Biological resource use | Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest] | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
|||||||||
Energy production & mining | Mining & quarrying | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
|||||||||
Residential & commercial development | Housing & urban areas | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
|||||||||
Transportation & service corridors | Roads & railroads | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
Recommended citation
BirdLife International (2024) Species factsheet: Sao Paulo Tyrannulet Phylloscartes paulista. Downloaded from
https://datazone.birdlife.org/species/factsheet/sao-paulo-tyrannulet-phylloscartes-paulista on 03/12/2024.
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 03/12/2024.