Data Zone
Justification of Red List category
This species has a small population and a small range. However, forest loss is low within the range and the species is able to tolerate degraded and converted habitat; it is currently not considered to be under imminent threat. It is therefore listed as Vulnerable.
Population justification
The species is described as fairly common, but the population size has not been quantified directly (del Hoyo et al. 2020). Based on the recorded population densities of congeners (Thamnephilus aethiops: 2 mature individuals/km2 and T. schistaceus: 20 mature individuals/km2 in Peru [Santini et al. 2018]) and tentatively assuming that only about 10% of the range is occupied, the population is estimated to fall in the band 600-6,000 mature individuals.
Trend justification
The population trend has not been quantified directly. The only threat known to this species is the loss and degradation of its habitat. Tree cover within the range has been lost at a rate of up to 4% over the past three generations (10.8 years; Global Forest Watch 2020). The species is not dependent on forest cover, but also occurs in scrubland and thickets, and seems to be able to tolerate a certain level of habitat degradation (del Hoyo et al. 2020). Therefore on a precautionary basis, it is suspected that the species is undergoing a slow decline, the rate of which is unlikely to exceed 10% over three generations.
Thamnophilus shumbae is found in the drainage basin of the Marañón River in north-central Peru (del Hoyo et al. 2003).
The species is not well known. It inhabits deciduous forest woodland, but also lowland arid scrub and riparian thickets at elevations below 1,000 m (del Hoyo et al. 2020). The species is thought to be of low sensitivity and to tolerate habitat conversion and degradation (del Hoyo et al. 2020).
The only threat that is possibly affecting the species is the loss and degradation of its habitat, though it appears to tolerate habitat conversion and degradation (del Hoyo et al. 2020).
Conservation Actions Underway
There are no targeted conservation actions known for this species.
Conservation Actions Proposed
Monitor the population size and trend. Assess the threats the species is facing and their impacts on the population size. Research the species's ecology and habitat requirements.
15-16 cm. Dimorphic antbird. Males have a black head, throat and upper breast, with extensive white speckling around the bill. Females have an entirely rufous crown.
Text account compilers
Martin, R., Hermes, C., Wheatley, H.
Contributors
Butchart, S., Ekstrom, J., Khwaja, N. & Westrip, J.R.S.
Recommended citation
BirdLife International (2024) Species factsheet: Maranon Antshrike Thamnophilus shumbae. Downloaded from
https://datazone.birdlife.org/species/factsheet/maranon-antshrike-thamnophilus-shumbae on 26/12/2024.
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 26/12/2024.