Current view: Data table and detailed info
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
Red List history
| Migratory status |
not a migrant |
Forest dependency |
medium |
| Land-mass type |
continent
|
Average mass |
- |
Population justification: The species is described as uncommon (Freile and Restall 2018, Walther 2020, Hilty 2021); it appears to occur patchily within its range (eBird 2024). Using a density (based on surveys of territorial individuals) of 3.1 mature individuals per km2 and assuming that it is present in only 10% of the modelled area of suitable habitat, 17,152 km2 (M. Sánchez Nivicela in litt. 2024), an indicative precautionary population size is around 5,300 mature individuals. The national population size in Colombia is estimated at 2,747 mature individuals (Renjifo et al. 2014), based on an occupied habitat area of 886 km2 out of 3,240 km2 apparently suitable habitat (27%) and the same density. Using this proportion of occupied habitat increases the overall preliminary population size to 14,400 mature individuals, such that a preliminary suggested population size falls between 5,000-15,000 mature individuals.
The population is inferred to be declining due to ongoing slow forest loss and additive impacts of fragmentation and continued degradation of remaining forest after very rapid deforestation last century (Dodson and Gentry 1991). A suspected rate of reduction exceeding 30% was applied to the Colombian population based on 18% habitat loss between 2000-2010, with the additional loss suspected due to the impact of very small-scale but relevant clearance not being detected (Renjifo et al. 2014).
Trend justification: The population trend has not been investigated, but declines are suspected on the basis of ongoing the loss and degradation of forests within its range. Up until the 1980s, deforestation in western Ecuador proceeded rapidly at a rate of 57% per decade (Dodson and Gentry 1991), so that now mostly small fragments remain (see Global Forest Watch 2023). Forest loss has however since slowed down; currently tree cover within the range is lost at a rate of 2-4% over ten years (Global Forest Watch 2023, using Hansen et al. [2013] data and methods disclosed therein). The species tolerates some habitat degradation; it is not strictly dependent on forests, but is also found along edges, in clearings, secondary forest and plantations (Renjifo et al. 2014, Freile and Restall 2018, Walther 2020). But the occurrence records indicate the species is now absent from a large area around Guayaquil subject to habitat conversion and there are further previously occupied sites in the range with recent observer effort but where the species now appears absent (eBird 2024). Therefore, while current population declines are likely slow, it is inferred that there is continuing decline in the number of mature individuals. Rates of population reduction are placed in the band 3-9% over ten years.
Country/territory distribution
Important Bird and Biodiversity Areas (IBA)
Recommended citation
BirdLife International (2024) Species factsheet: Ochraceous Attila Attila torridus. Downloaded from
https://datazone.birdlife.org/species/factsheet/ochraceous-attila-attila-torridus on 23/11/2024.
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 23/11/2024.
