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Lined Antshrike Thamnophilus tenuepunctatus

Justification

Based on a model of future deforestation in the Amazon basin it is suspected that the population of this species will decline rapidly over the next three generations, and it has therefore been uplisted to Vulnerable.

Taxonomic source(s)
SACC. 2006. A classification of the bird species of South America. Available at: #http://www.museum.lsu.edu/~Remsen/SACCBaseline.html#.

Taxonomic note
Thamnophilus palliatus (Sibley and Monroe 1990, 1993) has been split into T. palliatus and T. tenuepunctatus following SACC (2005).

Identification
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.

Distribution and population
Thamnophilus tenuepunctatus has a large range on the east slopes of the Andes, and is generally considered uncommon to fairly common. The nominate subspecies tenuepunctatus is endemic to north-central Colombia, occurring in Norte de Santander, Cundinamarca and Meta departments. Subspecies tenuifasciatus occurs in Putumayo, south-central Colombia. This taxon is also found in Ecuador, ranging from Sucumbios southwards to north Zamora-Chinchipe. Subspecies berlepschi occurs in south Zamora-Chinchipe, and the regions of Amazonas, Cajamarca and San Martín in north-east Peru (del Hoyo et al. 2003).

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).

Trend justification
This species is suspected to lose 33.5-35.8% of suitable habitat within its distribution over three generations (15 years) based on a model of Amazonian deforestation (Soares-Filho et al. 2006, Bird et al. 2011). Given the susceptibility of the species to fragmentation and/or edge effects, it is therefore suspected to decline by ≥30% over three generations.

Ecology
This is primarily an understorey species of humid evergreen forest edges, preferring elevations of 500-1,700 m. It has also been known to occur in clearings, plantations, parks and gardens. It feeds mainly on insects and other arthropods. Little is known of the species's breeding (del Hoyo et al. 2003).

Threats
The primary threat to this species is accelerating deforestation as land is cleared for cattle ranching and soy production, facilitated by expansion of the road network (Soares-Filho et al. 2006, Bird et al. 2011).

Conservation Actions Underway
None is known.

Conservation Actions Proposed

Expand the protected area network to effectively protect IBAs. Effectively resource and manage existing and new protected areas, utilising emerging opportunities to finance protected area management with the joint aims of reducing carbon emissions and maximizing biodiversity conservation. Conservation on private lands, through expanding market pressures for sound land management and preventing forest clearance on lands unsuitable for agriculture, is also essential (Soares-Filho et al. 2006).

References
Bird, J. P.; Buchanan, J. M.; Lees, A. C.; Clay, R. P.; Develey, P. F.; Yépez, I.; Butchart, S. H. M. 2011. Integrating spatially explicit habitat projections into extinction risk assessments: a reassessment of Amazonian avifauna incorporating projected deforestation. Diversity and Distributions: doi: 10.1111/j.1472-4642.2011.00843.x.

del Hoyo, J.; Elliott, A.; Christie, D. 2003. Handbook of the Birds of the World, vol. 8: Broadbills to Tapaculos. Lynx Edicions, Barcelona, Spain.

Sibley, C. G.; Monroe, B. L. 1990. Distribution and taxonomy of birds of the world. Yale University Press, New Haven, USA.

Sibley, C. G.; Monroe, B. L. 1993. A supplement to 'Distribution and taxonomy of birds of the world'. Yale University Press, New Haven, USA.

Soares-Filho, B.S.; Nepstad, D.C.; Curran, L.M.; Cerqueira, G.C.; Garcia, R. A.; Ramos, C. A.; Voll, E.; McDonald, A.; Lefebvre, P.; Schlesinger, P. 2006. Modelling conservation in the Amazon basin. Nature 440(7083): 520-523.

Further web sources of information
Explore HBW Alive for further information on this species

Search for photos and videos, and hear sounds of this species from the Internet Bird Collection

Text account compilers
Khwaja, N., Pilgrim, J., Symes, A.

Contributors
Lees, A.

IUCN Red List evaluators
Butchart, S., Taylor, J.

Recommended citation
BirdLife International (2014) Species factsheet: Thamnophilus tenuepunctatus. Downloaded from http://www.birdlife.org on 23/10/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 23/10/2014.

This information is based upon, and updates, the information published in BirdLife International (2000) Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004) Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.

To provide new information to update this factsheet or to correct any errors, please email BirdLife

To contribute to discussions on the evaluation of the IUCN Red List status of Globally Threatened Birds, please visit BirdLife's Globally Threatened Bird Forums.

Additional resources for this species

ARKive species - Lined antshrike (Thamnophilus tenuepunctatus) 0

Key facts
Current IUCN Red List category Vulnerable
Family Thamnophilidae (Antbirds)
Species name author Lafresnaye, 1853
Population size Unknown mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 108,000 km2
Country endemic? No
Links to further information
- Additional Information on this species