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Chapman's Antshrike Thamnophilus zarumae

Justification
Although this species may have a restricted range, it is not believed to 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). Despite the fact that the population trend appears to be decreasing, the decline is not believed to be sufficiently rapid to 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.

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 doliatus (Sibley and Monroe 1990, 1993) has been split into T. doliatus and T. zarumae following SACC (2005).

Distribution and population
This species has a restricted distribution in south-west Ecuador and north-west Peru, occurring in El Oro and Loja provinces, Ecuador, and Tumbes, Piura and northern Lambayeque departments, Peru (Sibley and Monroe 1990). The species occurs in the North-west Peru Biosphere Reserve where it is uncommon to rare (Parker et al. 1995), and in the small El Tundo Nature Reserve in Loja province, Ecuador, where it is fairly common (I. Isherwood and J. Willis verbally 1998).

Population justification
The global population size has not been quantified, but this species is described as 'uncommon' (Stotz et al. 1996).

Trend justification
This population is suspected to be in decline owing to ongoing habitat destruction (del Hoyo et al. 2003).

Ecology
The species is found mainly in scrub, secondary woodland and forest borders in both arid and semi-humid regions (Ridgely and Tudor 1994), and has been recorded from thickets of Chusquea bamboo (I. Isherwood and J. Willis verbally 1998). Most records come from between 500 and 1,500 m altitude, but birds have been seen as high as 2,300 m in Ecuador (Ridgely and Tudor 1994). It often joins mixed species flocks, foraging mainly in relatively dense vegetation not far above ground level (Parker et al. 1995, I. Isherwood and J. Willis verbally 1998). Breeding probably takes place during the wet season (Brown 1941).

Threats
Much of the land within the species's rather restricted altitudinal range has been cleared for agriculture, and destruction of habitat is ongoing (I. Isherwood and J. Willis verbally 1998).

References
Brown, F. M. 1941. A gazetteer of entomological stations in Ecuador. Annals of the Entomological Society of America 34: 809-851.

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

Parker, T. A.; Schulenberg, T. S.; Kessler, M.; Wust, W. H. 1995. Natural history and conservation of the endemic avifauna in north-west Peru. Bird Conservation International 5: 201-231.

Ridgely, R. S.; Tudor, G. 1994. The birds of South America. University of Texas Press, Austin, Texas.

Stotz, D. F.; Fitzpatrick, J. W.; Parker, T. A.; Moskovits, D. K. 1996. Neotropical birds: ecology and conservation. University of Chicago Press, Chicago.

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
Ekstrom, J., Butchart, S., Harding, M., Fisher, S.

IUCN Red List evaluators
Butchart, S., Symes, A.

Recommended citation
BirdLife International (2014) Species factsheet: Thamnophilus zarumae. Downloaded from http://www.birdlife.org on 25/07/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 25/07/2014.

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.

Key facts
Current IUCN Red List category Least Concern
Family Thamnophilidae (Antbirds)
Species name author Chapman, 1921
Population size Unknown mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 27,900 km2
Country endemic? No
Links to further information
- Additional Information on this species