Species

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). 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.

Taxonomic source(s)
Schulenberg, T. S.; Goodman, S. M.; Razafimahaimodison, J.-C. 1993. Genetic variation in two subspecies of Nesillas typica (Sylviinae) in south-east Madagascar. Annales des Sciences Zoologiques Musee Royal de l'Afrique Centrale 286: 173-177.

Taxonomic note
Nesillas typica (Sibley and Monroe 1990, 1993) has been split into N. typica and N. lantzii following Schulenberg et al. (1993).

Distribution and population
The species is largely restricted to south-western Madagascar, where it has been recorded from Ankapoky, Petriky, Tolagnaro and possibly Mandena (Schulenberg et al. 1993).

Population justification
The global population size has not been quantified, but the species is reported to be not uncommon (Sinclair and Langrand 1998).

Trend justification
The population is suspected to be stable in the absence of evidence for any declines or substantial threats (del Hoyo et al. 2006).

Ecology
The species was formerly considered a subspecies of Madagascar Brush-Warbler N. typica which is common and widespread in Madagascar (Schulenberg et al. 1993), but was proposed as a full species in 1993. It is restricted to arid areas from sea level to 500 m, typically in Euphorbia forest, low coastal scrub, degraded forest and the edges of lowland, evergreen, humid forest (Morris and Hawkins 1998). It is found alone or in pairs, feeding on insects (Langrand 1990). The nest is built close to the ground in a dense tuft of grass or bush; clutch size is two and nesting has been observed in August-February, peaking in October-December (Langrand 1990).

Conservation actions underway
None is known.

Conservation actions proposed
The remaining deciduous, dry, southern forest and scrubland has been identified as the vegetation type with the most outstanding need for additional reserves in Madagascar (Du Puy and Moat 1996).

References
Langrand, O. 1990. Guide to the birds of Madagascar. Yale University Press, New Haven, USA.

Schulenberg, T. S.; Goodman, S. M.; Razafimahaimodison, J.-C. 1993. Genetic variation in two subspecies of Nesillas typica (Sylviinae) in south-east Madagascar. Annales des Sciences Zoologiques Musee Royal de l'Afrique Centrale 286: 173-177.

Du Puy, D. J.; Moat, J. 1996. A refined classification of the primary vegetation of Madagascar based on the underlying geology: using GIS to map its distribution and to assess its conservation status. In: Lourenço, W.R. (ed.), Proceedings of the International Symposium on the biogeography of Madagascar, pp. 205-218. ORSTOM, Paris.

Morris, P.; Hawkins, F. 1998. Birds of Madagascar: a photographic guide. Pica Press, Robertsbridge, UK.

Sinclair, I.; Langrand, O. 1998. Birds of the Indian Ocean Islands: Madagascar, Mauritius, Réunion, Rodrigues, Seychelles, The Comoros. Struik Publishers (Pty) Ltd, Cape Town, South Africa.

Further web sources of information
Hear sounds for this species from xeno-canto, the community database of shared bird sounds from around the world.

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

Text account compilers
Butchart, S., Ekstrom, J., Fisher, S., Harding, M.

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

Recommended citation
BirdLife International (2013) Species factsheet: Nesillas lantzii. Downloaded from http://www.birdlife.org on 23/05/2013. Recommended citation for factsheets for more than one species: BirdLife International (2013) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 23/05/2013.

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.

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