Data Zone
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: #http://www.museum.lsu.edu/~Remsen/SACCBaseline.htm#.
| Critically Endangered | Endangered | Vulnerable |
|---|---|---|
| - | - | - |
| Year | Category | Criteria |
|---|---|---|
| 2022 | Near Threatened | B1ab(ii,iii,v); C2a(i) |
| 2016 | Least Concern | |
| 2012 | Least Concern | |
| 2009 | Least Concern | |
| 2008 | Least Concern | |
| 2004 | Least Concern | |
| 2000 | Lower Risk/Least Concern | |
| 1994 | Not Recognised | |
| 1988 | Not Recognised |
| Migratory status | not a migrant | Forest dependency | high |
| Land mass type | Average mass | - |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence breeding/resident (km2) | 17,200 | medium |
| Extent of Occurrence breeding/resident (km2) | 10,000 | |
| Number of locations | 11-100 | - |
| Severely Fragmented | - |
| Value | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| No. of mature individuals | 8500-11500 | poor | inferred | 2021 |
| 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 | 5-100 | - | - | - |
| Percentage in largest subpopulation | 1-89 | - | - | - |
Population justification: The global population size has not been quantified, but the species is described as common to fairly common (Stotz et al. 1996).
Currently, 60,000-80,000 ha within its range are covered by forest with 75% canopy (Global Forest Watch 2021). Assuming that this species occurs at a similar density than a congener (S. robbinsi in Ecuador: 2 mature individuals in 7 ha of forest; Hermes et al. 2017), and further assuming that half of the forests are occupied, the population may number 8,500-11,500 mature individuals. This number however requires confirmation.
Based on the spatial spread of records (eBird 2021) and accounting for the generally low dispersal abilities of tapaculos (Krabbe and Schulenberg 2003), it is conceivable that the species forms several small subpopulations.
Trend justification: This species is assessed as being decline owing to ongoing habitat destruction (del Hoyo et al. 2003).
Currently, tree cover within the range is lost at a rate of up to 7% over ten years (Global Forest Watch 2021, using Hansen et al. [2013] data and methods disclosed therein). While the species is forest-restricted, it appears to tolerate some degree of disturbance, as long as a dense understory vegetation is present (Krabbe and Schulenberg 2020). Population declines are therefore tentatively placed in the band 1-9% over ten years.
| Country/Territory | Presence | Origin | Resident | Breeding | Non-breeding | Passage |
|---|---|---|---|---|---|---|
| Peru | extant | native | yes |
| Country/Territory | IBA Name |
|---|---|
| Ecuador | Bosque Protector Colambo-Yacuri |
| Ecuador | Cordillera del Cóndor |
| Ecuador | Utuana-Bosque de Hanne |
| Peru | Aypate |
| Peru | Bosque de Cuyas |
| Peru | Cerro Chinguela |
| Peru | Chiñama |
| Peru | Cordillera Vilcabamba |
| Peru | Cordillera Yanachaga |
| Peru | Florida y Laguna Pomacochas |
| Peru | Huamba |
| Peru | Laquipampa |
| Peru | Llaguén |
| Peru | Río Mantaro - Cordillera Central |
| Peru | Toldo |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Forest | Subtropical/Tropical Moist Montane | major | resident |
| Altitude | 2000 - 3170 m | Occasional altitudinal limits |
| 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%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
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| Agriculture & aquaculture | Livestock farming & ranching - Small-holder grazing, ranching or farming | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
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| Natural system modifications | Fire & fire suppression - Increase in fire frequency/intensity | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
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Recommended citation
BirdLife International (2023) Species factsheet: Scytalopus unicolor. Downloaded from
http://datazone.birdlife.org/species/factsheet/unicolored-tapaculo-scytalopus-unicolor on 03/06/2023.
Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from
http://datazone.birdlife.org on 03/06/2023.
