Data Zone
Justification of Red List category
This species has a very large range, and hence does not approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <20,000 km2 combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). The population trend appears to be stable, and hence the species does not approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size is very large, and hence does not approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern.
Population justification
The global population size has not been quantified, but the species is described as fairly common to common (Stotz et al. 1996, Krabbe and Schulenberg 2020).
Currently, c.1,000,000 ha within its range are covered by forest with 75% canopy (Global Forest Watch 2021, using Hansen et al. [2013] data and methods disclosed therein). 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 c.140,000 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 subpopulations.
Trend justification
The species is restricted to the understory of mature humid forests (Krabbe and Schulenberg 2020) and as such it is at risk from the degradation and loss of its habitat. Within the range, tree cover loss is minimal (<1.5% over ten years; Global Forest Watch 2021, using Hansen et al. [2013] data and methods disclosed therein); the population is therefore suspected to be stable in the absence of evidence for any declines or substantial threats.
The species is endemic to the eastern slope of the Andes in central Peru.
Text account compilers
Hermes, C.
Contributors
Butchart, S. & Ekstrom, J.
Recommended citation
BirdLife International (2024) Species factsheet: Tschudi's Tapaculo Scytalopus acutirostris. Downloaded from
https://datazone.birdlife.org/species/factsheet/tschudis-tapaculo-scytalopus-acutirostris on 22/12/2024.
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 22/12/2024.