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CR
Hoary-throated Spinetail Synallaxis kollari

IUCN Red List Criteria

Critically Endangered A3c 
Endangered A3c;B1ab(iii,v)+2ab(iii,v) 
Vulnerable A2c+3c;B1ab(iii,v)+2ab(iii,v);C2a(i) 

IUCN Red List history

Year Category
2012 Critically Endangered
2008 Endangered
2005 Vulnerable
2004 Endangered
2000 Endangered
1996 Vulnerable
1994 Vulnerable
1988 Near Threatened

Species attributes

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

Distribution

  Estimate Data quality
Extent of Occurrence breeding/resident (km2) 4,100 medium
Area of Occupancy breeding/resident (km2) 206 good
Number of locations 6 -
Fragmentation -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals 1500-7000 medium Estimated 2004
Population trend Decreasing poor -
Number of subpopulations 2-100 - - -
Largest subpopulation 251-1000 - - -
Generation length (yrs) 3.8 - - -
Population justification: Vale et al. (2007) state that there is 206 km2 of suitable habitat, with a species population density of 60 individuals / km2. This gives a population size of c.5,000 individuals, and so it is placed in the band 2,500-9,999 individuals. This equates to 1,667-6,666 mature individuals, rounded here to 1,500-7,000 mature individuals.
Trend justification: This species is suspected to lose 83.5-83.8% of suitable habitat within its distribution over three generations (11 years) based on a model of Amazonian deforestation (Soares-Filho et al. 2006, Bird et al. 2011). Given the susceptibility of the species to fragmentation and/or edge effects, it is therefore suspected to decline by ≥80% over three generations.

Country/Territory distribution

Country/Territory Occurrence status Presence Breeding Non-breeding Passage
Brazil Native Extant      
Guyana Native Extant      

Important Bird Areas where this species has triggered the IBA criteria

Country/Territory IBA Name IBA link
Brazil Lavrados de Roraima site factsheet
Brazil Savanas do Rio Cotingo site factsheet

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Swamp major resident
Altitude 0 - 100 m Occasional altitudinal limits  

Threats & impact

Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Annual & perennial non-timber crops / Agro-industry farming Timing Scope Severity Impact
Ongoing Majority (50-90%) Very Rapid Declines High Impact: 8
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Livestock farming & ranching / Agro-industry grazing, ranching or farming Timing Scope Severity Impact
Ongoing Majority (50-90%) Very Rapid Declines High Impact: 8
Stresses
Ecosystem degradation, Ecosystem conversion
Biological resource use Logging & wood harvesting / Unintentional effects: (subsistence/small scale) [harvest] Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Stresses
Ecosystem degradation
Natural system modifications Fire & fire suppression / Increase in fire frequency/intensity Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Decline Medium Impact:
Stresses
Ecosystem degradation
Pollution Agricultural & forestry effluents / Herbicides and pesticides Timing Scope Severity Impact
Ongoing Minority (<50%) Rapid Declines Medium Impact:
Stresses
Ecosystem degradation, Species mortality
Pollution Agricultural & forestry effluents / Nutrient loads Timing Scope Severity Impact
Ongoing Minority (<50%) Rapid Declines Medium Impact:
Stresses
Ecosystem degradation, Species mortality

Recommended citation
BirdLife International (2014) Species factsheet: Synallaxis kollari. Downloaded from http://www.birdlife.org on 24/04/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 24/04/2014.

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 Critically Endangered
Family Furnariidae (Ovenbirds)
Species name author Pelzeln, 1856
Population size 1500-7000 mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 4,100 km2
Country endemic? No
Links to further information
- Summary information on this species