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 has not been quantified, but it is not believed to 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 uncommon to fairly common throughout its range (del Hoyo et al. 2003, Zimmer et al. 2020).
Trend justification
The population trend has not been investigated. Tree cover within the range is lost at a rate of 4% over ten years (Global Forest Watch 2022, using Hansen et al. [2013] data and methods disclosed therein). The species occurs in a variety of edge, secondary and converted habitats (Zimmer et al. 2020). Consequently, the current rate of tree cover loss may not be affecting the population; in fact, the species may benefit from low rates of deforestation as it is opening up new habitats. In the absence of evidence for any declines or substantial threats, the population is suspected to be stable.
Thamnophilus tenuepunctatus occurs on the east slope of the Andes from north-central Colombia through Ecuador south to north-central Peru.
This is primarily an understorey species of humid evergreen forest edges. It has also been known to occur in shrubby, regenerating clearings and plantations, or overgrown edges of parks and gardens. It feeds mainly on insects and other arthropods. Breeding has been documented in late March (Zimmer et al. 2020).
A potential threat to this species is deforestation, as land is cleared for agricultural purposes (Soares-Filho et al. 2006, Bird et al. 2011). Tree cover loss is however currently slow (Global Forest Watch 2022), and due to its low sensitivity to habitat disturbance the species is not thought to be negatively affected.
Conservation Actions Underway
None is known.
Conservation Actions Proposed
Quantify the population size. Monitor the population trend.
Expand the protected area network to effectively protect key sites. Effectively manage protected areas, utilising emerging opportunities to finance protected area management with the joint aims of reducing carbon emissions and maximizing biodiversity conservation. Incentivise conservation on private lands through expanding market pressures for sound land management and preventing forest clearance on lands unsuitable for agriculture (Soares-Filho et al. 2006).
15-16 cm. Medium-sized, dimorphic antshrike. Both sexes have a crest and a yellowish iris. Male is black with narrow white bars throughout, except on plain black crown, and throat, which is white streaked with black. In the female, crown, upperparts, wings and tail are rufous. Underparts black with white bars as with male; throat and side of head likewise white with black streaks. Voice Song is a loud series of accelerating, abrupt nasal notes, rising in pitch initially and falling towards the end, where it finishes with a rasping note.
Text account compilers
Hermes, C.
Contributors
Khwaja, N., Lees, A., Pilgrim, J., Sharpe, C.J. & Symes, A.
Recommended citation
BirdLife International (2024) Species factsheet: Lined Antshrike Thamnophilus tenuepunctatus. Downloaded from
https://datazone.birdlife.org/species/factsheet/lined-antshrike-thamnophilus-tenuepunctatus on 22/11/2024.
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 22/11/2024.