LC
Vilcabamba Spinetail Cranioleuca weskei



Taxonomy

Taxonomic note
Cranioleuca marcapatae and C. weskei (del Hoyo and Collar 2016) were previously lumped as C. marcapatae following SACC (2005 & updates), Sibley and 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
- - -

Red List history
Year Category Criteria
2020 Least Concern
2016 Near Threatened A3c+4c
Species attributes

Migratory status not a migrant Forest dependency High
Land mass type Average mass -
Distribution

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 35,600 medium
Number of locations -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals unknown not applicable not applicable 0
Population trend Decreasing suspected -
Decline (3 years/1 generation past) - - -
Decline (5 years/1 generation past) - - -
Decline (10 years/1 generation past) - - -
Decline (10 years/3 generation future) 1-9 - - -
Decline (10 years/3 generation past and future) 1-9 - - -
Number of subpopulations - - -
Percentage in largest subpopulation - - -

Population justification: The population size has not been quantified, but the species is described as uncommon to locally fairly common (del Hoyo et al. 2020).

Trend justification: The population trend has not been estimated directly. The only threat known to the species is forest loss; however, deforestation over the past ten years has been low within the range (2%; Global Forest Watch 2020). Given that the species is restricted to montane and elfin forest, it can precautionarily be suspected that population declines are exacerbated by habitat degradation and will exceed the rates of forest loss alone. Nevertheless, it is unlikely that the rate of population decline surpasses 10% over ten years.


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Peru N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Peru Cordillera Vilcabamba
Peru La Esperanza
Peru Santuario Nacional del Ampay
Peru Santuario Histórico Machu Picchu

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Moist Montane major resident
Altitude 2400 - 3500 m Occasional altitudinal limits  

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
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
Stresses
Ecosystem degradation, Ecosystem conversion

Recommended citation
BirdLife International (2023) Species factsheet: Cranioleuca weskei. Downloaded from http://www.birdlife.org on 03/02/2023. Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 03/02/2023.