Data Zone
Taxonomic note
Sclerurus scansor and S. cearensis (del Hoyo and Collar 2016) were previously lumped as S. scansor following SACC (2005 & updates), Sibley & Monroe (1990, 1993) and Stotz et al. (1996).
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.
| Critically Endangered | Endangered | Vulnerable |
|---|---|---|
| - | - | B2ab(ii,iii) |
| Year | Category | Criteria |
|---|---|---|
| 2019 | Vulnerable | B2ab(ii,iii) |
| 2016 | Vulnerable | B2ab(ii,iii) |
| 2012 | Not Recognised | |
| 2008 | Not Recognised | |
| 2004 | Not Recognised | |
| 2000 | Not Recognised | |
| 1994 | Not Recognised | |
| 1988 | Not Recognised |
| Migratory status | not a migrant | Forest dependency | high |
| Land-mass type | Average mass | 37 g |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence (breeding/resident) | 658,000 km2 | medium |
| Area of Occupancy (breeding/resident) | 2,000 km2 | |
| Number of locations | 11-100 | - |
| Severely fragmented? | yes | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Population size | unknown | - | - | - |
| Population trend | decreasing | - | inferred | 2014-2024 |
| Rate of change over the past 10 years/3 generations (longer of the two periods) | 1-9% | - | - | - |
| Rate of change over the future 10 years/3 generations (longer of the two periods) | 1-9% | - | - | - |
| Rate of change over the past & future 10 years/3 generations (longer of the two periods) | 1-9% | - | - | - |
| Generation length | 3.4 years | - | - | - |
| Number of subpopulations | 2-100 | - | - | - |
| Percentage of mature individuals in largest subpopulation | 1-89% | - | - | - |
Population justification: The global population size has not been quantified given recent taxonomic splits.
Trend justification: This species is thought to be in decline and severely fragmented owing to ongoing habitat destruction (del Hoyo et al. 2003). A remote sensing study found that forest loss within its range were potentially 3% over the last three generations (Tracewski et al. 2016); thus the species may be declining by <10% over three generations.
| Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
|---|---|---|---|---|---|---|
| Brazil | extant | native | yes |
| Country/Territory | IBA Name |
|---|---|
| Brazil | Chapada do Araripe |
| Brazil | Serra de Ibiapaba |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Forest | Subtropical/Tropical Moist Lowland | major | resident |
| Forest | Subtropical/Tropical Moist Montane | suitable | resident |
| Altitude | 0 - 1500 m | Occasional altitudinal limits |
| Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Biological resource use | Logging & wood harvesting - Motivation Unknown/Unrecorded | Timing | Scope | Severity | Impact | ||||
| Ongoing | Whole (>90%) | Unknown | Unknown | ||||||
|
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| Biological resource use | Logging & wood harvesting - Unintentional effects: (large scale) [harvest] | Timing | Scope | Severity | Impact | ||||
| Ongoing | Whole (>90%) | Unknown | Unknown | ||||||
|
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Recommended citation
BirdLife International (2024) Species factsheet: Ceara Leaftosser Sclerurus cearensis. Downloaded from
https://datazone.birdlife.org/species/factsheet/ceara-leaftosser-sclerurus-cearensis on 27/11/2024.
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 27/11/2024.