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Bolivian Spinetail Cranioleuca henricae

IUCN Red List Criteria

Critically Endangered  
Endangered B1ab(i,ii,iii,v); C2a(i) 
Vulnerable B1ab(i,ii,iii,v) 

IUCN Red List history

Year Category
2013 Endangered
2012 Endangered
2008 Endangered
2004 Endangered
2000 Endangered
1994 Not Recognised
1988 Not Recognised

Species attributes

Migratory status not a migrant Forest dependency Medium
Land mass type continent
Average mass -

Distribution

  Estimate Data quality
Extent of Occurrence breeding/resident (km2) 3,000 medium
Number of locations 6 -
Fragmentation -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals 1600-6700 medium Estimated 2010
Population trend Decreasing poor -
Number of subpopulations 2-100 - - -
Largest subpopulation 251-1000 - - -
Generation length (yrs) 3.8 - - -
Population justification: In 2010, surveys utilising standard point count methodology yielded an average of 1.32 individuals/survey point (0.785 ha), suggesting by extrapolation a conservative estimated density of 1.68 individuals/ha (S. K. Herzog in litt. 2013). Distribution modelling (not equivalent to Extent of Occurrence) has yielded an estimate of 1,889 km2 for this species (Herzog et al. 2012), which (when combined with the conservative estimate of 168 individuals/km2) suggests that even if only 1% of this area contained suitable habitat the population would be expected to number c.3,000 individuals. The total population is therefore placed in the band 2,500-9,999 individuals, equivalent to c.1,600-6,700 mature individuals.
Trend justification: A slow and continuing population decline is suspected, owing to on-going habitat loss, fragmentation and degradation.

Country/Territory distribution

Country/Territory Occurrence status Presence Breeding Non-breeding Passage Resident
Bolivia Native Extant       Yes

Important Bird Areas where this species has triggered the IBA criteria

Country/Territory IBA Name IBA link
Bolivia Cuenca Cotacajes site factsheet
Bolivia Tacacoma-Quiabaya y Valle de Sorata site factsheet

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Dry major resident
Shrubland Subtropical/Tropical Dry major resident
Shrubland Subtropical/Tropical High Altitude major resident
Altitude 1800 - 3300 m Occasional altitudinal limits  

Threats & impact

Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Livestock farming & ranching / Small-holder grazing, ranching or farming Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Decline Medium Impact: 6
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Wood & pulp plantations / Agro-industry plantations Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Decline Medium Impact: 6
Stresses
Ecosystem degradation, Ecosystem conversion
Biological resource use Logging & wood harvesting / Unintentional effects: (subsistence/small scale) [harvest] Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Decline Medium Impact: 6
Stresses
Ecosystem degradation
Geological events Avalanches/landslides Timing Scope Severity Impact
Future Majority (50-90%) Very Rapid Declines Medium Impact: 6
Stresses
Ecosystem degradation
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Unspecified eucalyptus (Eucalyptus spp.) Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Decline Medium Impact: 6
Stresses
Ecosystem degradation, Ecosystem conversion
Natural system modifications Fire & fire suppression / Increase in fire frequency/intensity Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Decline Medium Impact: 6
Stresses
Ecosystem degradation
Transportation & service corridors Roads & railroads Timing Scope Severity Impact
Ongoing Minority (<50%) Rapid Declines Medium Impact: 6
Stresses
Ecosystem degradation, Ecosystem conversion

Recommended citation
BirdLife International (2014) Species factsheet: Cranioleuca henricae. Downloaded from http://www.birdlife.org on 22/08/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 22/08/2014.

This information is based upon, and updates, the information published in BirdLife International (2000) Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004) Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.

To provide new information to update this factsheet or to correct any errors, please email BirdLife

To contribute to discussions on the evaluation of the IUCN Red List status of Globally Threatened Birds, please visit BirdLife's Globally Threatened Bird Forums.

Key facts
Current IUCN Red List category Endangered
Family Furnariidae (Ovenbirds)
Species name author Maijer & Fjeldså, 1997
Population size 1600-6700 mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 3,000 km2
Country endemic? Yes
Links to further information
- Summary information on this species