VU
Ceara Leaftosser Sclerurus cearensis



Taxonomy

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.

IUCN Red List criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - B2ab(ii,iii)

Red List history
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
Species attributes

Migratory status not a migrant Forest dependency high
Land-mass type Average mass 37 g
Range

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 -
Population
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 distribution
Country/Territory Presence Origin Resident Breeding visitor Non-breeding visitor Passage migrant
Brazil extant native yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Brazil Chapada do Araripe
Brazil Serra de Ibiapaba

Habitats & altitude
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  

Threats & impact
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
Stresses
Ecosystem degradation
Biological resource use Logging & wood harvesting - Unintentional effects: (large scale) [harvest] Timing Scope Severity Impact
Ongoing Whole (>90%) Unknown Unknown
Stresses
Ecosystem degradation, Ecosystem conversion

Recommended citation
BirdLife International (2024) Species factsheet: Ceara Leaftosser Sclerurus cearensis. Downloaded from https://datazone.birdlife.org/species/factsheet/ceara-leaftosser-sclerurus-cearensis 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.