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Bamboo Warbler Bradypterus alfredi
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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.

Distribution and population
This taxon comprises two subspecies. The nominate is known from west Ethiopia at Didessa (Shoa Province), Bulcha forest (Sidamo Province) and Gambela, south Sudan, from Gilo where is was frequent in 1997, the eastern Democratic Republic of Congo, from the plateau west of Lake Albert and Rwenzoris south to the mountains north-west of Baraka, Bunia (Ituri District), Nyangabo (South Lendu plateau) and Lwiro and Dipidi in Upemba National Park, although it may also occur in the south-east of the country, and west Uganda, at Bugoma Forest and Mubuku Valley. Subspecies kungwensis occurs in west Tanzania at Mount Kungwe and Mount Mahari, with an isolated population in Mwinilunga District, north-west Zambia, and is rare and localized throughout its range, although the reasons for its rarity remain obscure (Urban et al. 1997, Collar and Stuart 1985).

Population justification
The global population size has not been quantified, but the species is described as rare and localised throughout its range (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 a wide variety of habitats, mainly bamboo but also areas of high grass and dense cover both in and outside forest and in forest edge, from 1,100-2,300 m, and from 525-1,260 m in Ethiopia (Sibley and Monroe 1990, Urban et al. 1997). In the Democratic Republic of Congo and Ethiopia it occurs in a complex mosaic of riverine marshland, Combretum/Terminalia savanna, crops, and mixed deciduous woodland, also occurring near villages (Urban et al. 1997). In Sudan it inhabits grassy secondary growth and in Zambia moist evergreen forest (Urban et al. 1997). Its breeding ecology is unknown (Urban et al. 1997). It keeps to the ground stratum, mainly below 1.5 m, feeding on insects (Urban et al. 1997).

Collar, N. J.; Stuart, S. N. 1985. Threatened birds of Africa and related islands: the ICBP/IUCN Red Data Book. International Council for Bird Preservation, and International Union for Conservation of Nature and Natural Resources, Cambridge, U.K.

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.

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

Urban, E. K.; Fry, C. H.; Keith, S. 1997. The birds of Africa vol. V. Academic Press, London.

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.

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

Recommended citation
BirdLife International (2016) Species factsheet: Bradypterus alfredi. Downloaded from on 21/10/2016. Recommended citation for factsheets for more than one species: BirdLife International (2016) IUCN Red List for birds. Downloaded from on 21/10/2016.

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 Hartlaub, 1890
Population size Unknown mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 91,500 km2
Country endemic? No
Links to further information
- Additional Information on this species
- Projected distributions under climate change