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Rand's Warbler Randia pseudozosterops
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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). 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)
Dowsett, R. J.; Forbes-Watson, A. D. 1993. Checklist of birds of the Afrotropical and Malagasy regions. Tauraco Press, Li
Sibley, C. G.; Monroe, B. L. 1990. Distribution and taxonomy of birds of the world. Yale University Press, New Haven, USA.

An odd, pale warbler of the canopy. Grey-green on cap and mantle, with a fairly conspicuous pale supercilium and off-white underparts. Many birds have a largely pale orange bill. Very characteristic hunting behaviour, walking along horizontal branches peering over alternate sides of the branch and extracting invertebrates from moss. Similar spp. From all jeries by complete lack of yellow coloration, bizarre hunting behaviour, solid and slightly decurved yellow bill, and song. Hints Most common along large rainforest rivers in lowlands and at mid-altitude, where birds sing (a loud, rather flat and descending tew-tew-tew-tew) from the tops of riverside trees. A very regular member of mixed-species groups.

Distribution and population
This species is restricted to the eastern rainforests of Madagascar (Stattersfield et al. 1998).

Population justification
The global population size has not been quantified, but the species is described as widespread and fairly common in rainforests in eastern Madagascar (del Hoyo et al. 2006).

Trend justification
The population is suspected to be in decline owing to ongoing habitat destruction.

The species is found in lowland and mid-altitude forest at altitudes up to 1,200 m or, more rarely, to 1,500 m (Morris and Hawkins 1998). It frequents the canopy of undisturbed forest where it is often seen accompanying mixed species flocks (Langrand 1990).

Much of the species forest habitat is being rapidly lost and fragmented, mainly through subsistence agriculture and commercial logging.

del Hoyo, J.; Elliott, A.; Christie, D. 2006. Handbook of the Birds of the World, vol. 11: Old World Flycatchers to Old World Warblers. Lynx Edicions, Barcelona, Spain.

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

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

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

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

Recommended citation
BirdLife International (2016) Species factsheet: Randia pseudozosterops. Downloaded from on 26/10/2016. Recommended citation for factsheets for more than one species: BirdLife International (2016) IUCN Red List for birds. Downloaded from on 26/10/2016.

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 Sylviidae (Old World warblers)
Species name author Delacour & Berlioz, 1931
Population size Unknown mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 150,000 km2
Country endemic? Yes
Links to further information
- Additional Information on this species