Data Zone
Justification of Red List category
This species has an extremely large range, and hence does not approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence under 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 size has not been quantified, but it is not believed to approach the thresholds for Vulnerable under the population size criterion (under 10,000 mature individuals with a continuing decline estimated to be over 10% in ten years or three generations, or with a specified population structure). The population trend appears to be stable, and hence the species does not approach the thresholds for Vulnerable under the population trend criterion (over 30% decline over ten years or three generations). For these reasons the species is evaluated as Least Concern.
Population justification
The global population size has not been quantified, but this species is described as "locally fairly common" in at least parts of its wide range (Zimmer and Isler 2003). This species is considered to have a medium dependency on forest habitat, and tree cover is estimated to have declined by 12.2% within its mapped range over the past 10 years (Global Forest Watch 2022, using Hansen et al. [2013] data and methods disclosed therein). However, the species is common and adaptable throughout it range, and its population trend is therefore considered stable.
Trend justification
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This species has a large range in two disjunct areas: coastal eastern Brazil; and coastal north-east Brazil through southern Amazonia to the Andes of central and southern Peru and northern Bolivia.
Text account compilers
Rutherford, C.A.
Recommended citation
BirdLife International (2024) Species factsheet: Chestnut-backed Antshrike Thamnophilus palliatus. Downloaded from
https://datazone.birdlife.org/species/factsheet/chestnut-backed-antshrike-thamnophilus-palliatus 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.