NT
Rusty-headed Spinetail Synallaxis fuscorufa



Taxonomy

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.
SACC. 2005 and updates. A classification of the bird species of South America. Available at: https://www.museum.lsu.edu/~Remsen/SACCBaseline.htm.

IUCN Red List criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - -

Red List history
Year Category Criteria
2022 Near Threatened B1b(iii)
2016 Vulnerable A2c+3c+4c;B1ab(i,ii,iii)
2012 Vulnerable A2c+3c+4c;B1ab(i,ii,iii)
2008 Vulnerable A2c; A3c; A4c; B1a+b(i,ii,iii)
2005 Vulnerable
2004 Vulnerable
2000 Lower Risk/Near Threatened
1994 Lower Risk/Near Threatened
1988 Lower Risk/Least Concern
Species attributes

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

Estimate Data quality
Extent of Occurrence (breeding/resident) 5,280 km2 medium
Area of Occupancy (breeding/resident) 3,148 km2
Severely fragmented? no -
Population
Estimate Data quality Derivation Year of estimate
Population size 2500-9999 mature individuals poor suspected 2021
Population trend stable poor suspected -
Generation length 3.11 years - - -
Number of subpopulations 1 - - -
Percentage of mature individuals in largest subpopulation 100% - - -

Population justification: The population size has not been quantified, but the species is described as common (Renjifo et al. 2016). Based on the small distribution range, the population is tentatively suspected to number below 10,000 mature individuals; it is therefore here placed in the band 2,500-9,999 mature individuals. This value however requires confirmation, and an accurate estimate of the population size is urgently needed.

Trend justification: The population trend has not been assessed directly. While deforestation has likely been severe in the past (e.g. Renjifo et al. 2016), tree cover loss within the range is currently proceeding at a rate of 2% over ten years (Global Forest Watch 2021, using Hansen et al. [2013] data and methods disclosed therein). As apart from forests the species also inhabits edges and secondary habitat (Remsen 2020), the current low rate of tree cover loss is unlikely to drive a population decline. In the absence of evidence of any declines or substantial threats, the population is therefore suspected to be stable.


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

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Colombia Cuchilla de San Lorenzo
Colombia Eco-parque Los Besotes
Colombia Valle de San Salvador
Colombia Valle del Río Frío

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Subtropical/Tropical Heavily Degraded Former Forest suitable resident
Forest Subtropical/Tropical Moist Montane suitable resident
Shrubland Subtropical/Tropical Moist marginal resident
Altitude 2000 - 3000 m Occasional altitudinal limits (min) 900 m

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Annual & perennial non-timber crops - Small-holder farming Timing Scope Severity Impact
Ongoing Minority (<50%) Negligible declines Low Impact: 4
Stresses
Ecosystem degradation
Agriculture & aquaculture Livestock farming & ranching - Small-holder grazing, ranching or farming Timing Scope Severity Impact
Ongoing Minority (<50%) Negligible declines Low Impact: 4
Stresses
Ecosystem degradation
Biological resource use Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest] Timing Scope Severity Impact
Ongoing Minority (<50%) Negligible declines Low Impact: 4
Stresses
Ecosystem degradation
Natural system modifications Fire & fire suppression - Increase in fire frequency/intensity Timing Scope Severity Impact
Ongoing Minority (<50%) Negligible declines Low Impact: 4
Stresses
Ecosystem degradation

Recommended citation
BirdLife International (2024) Species factsheet: Rusty-headed Spinetail Synallaxis fuscorufa. Downloaded from https://datazone.birdlife.org/species/factsheet/rusty-headed-spinetail-synallaxis-fuscorufa on 22/11/2024.
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 22/11/2024.