Data Zone
Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A., Fishpool, L.D.C., Boesman, P. and Kirwan, G.M. 2016. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 2: Passerines. Lynx Edicions and BirdLife International, Barcelona, Spain and Cambridge, UK.
| Critically Endangered | Endangered | Vulnerable |
|---|---|---|
| - | - | - |
| Year | Category | Criteria |
|---|---|---|
| 2024 | Least Concern | |
| 2016 | Least Concern | |
| 2012 | Least Concern | |
| 2009 | Least Concern | |
| 2008 | Least Concern | |
| 2004 | Least Concern | |
| 2000 | Lower Risk/Least Concern | |
| 1994 | Lower Risk/Least Concern | |
| 1988 | Lower Risk/Least Concern |
| Migratory status | not a migrant | Forest dependency | does not normally occur in forest |
| Land-mass type | Average mass | - |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence (breeding/resident) | 15,700,000 km2 | medium |
| Severely fragmented? | no | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Population size | unknown | - | - | - |
| Population trend | stable | - | suspected | - |
| Generation length | 3.62 years | - | - | - |
Population justification: The global population size has not been quantified, but the species is described as uncommon in southern Sudan, scarce in north-western Lesotho, rare in western Chad and common in Ethiopia, south Somalia, west and southern Uganda, Rwanda, Burundi and parts of the Democratic Republic of the Congo (del Hoyo et al. 2006). The population is suspected to be stable in the absence of evidence for any declines or substantial threats (del Hoyo et al. 2006).
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).
| Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
|---|---|---|---|---|---|---|
| Angola | extant | native | yes | |||
| Botswana | extant | native | yes | |||
| Burundi | extant | native | yes | |||
| Chad | extant | native | yes | |||
| Congo, The Democratic Republic of the | extant | native | yes | |||
| Djibouti | extant | native | yes | |||
| Eswatini | extant | native | yes | |||
| Ethiopia | extant | native | yes | |||
| Kenya | extant | native | yes | |||
| Lesotho | extant | native | yes | |||
| Malawi | extant | native | yes | |||
| Mozambique | extant | native | yes | |||
| Namibia | extant | native | yes | |||
| Nigeria | extant | native | yes | |||
| Rwanda | extant | native | yes | |||
| Somalia | extant | native | yes | |||
| South Africa | extant | native | yes | |||
| South Sudan | extant | native | yes | |||
| Sudan | extant | native | ||||
| Tanzania | extant | native | yes | |||
| Uganda | extant | native | yes | |||
| Zambia | extant | native | yes | |||
| Zimbabwe | extant | native | yes |
| Country/Territory | IBA Name |
|---|
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Grassland | Subtropical/Tropical Seasonally Wet/Flooded | suitable | resident |
| Marine Coastal/Supratidal | Coastal Brackish/Saline Lagoons/Marine Lakes | suitable | resident |
| Shrubland | Subtropical/Tropical Moist | suitable | resident |
| Wetlands (inland) | Bogs, Marshes, Swamps, Fens, Peatlands | major | resident |
| Wetlands (inland) | Permanent Freshwater Lakes (over 8ha) | suitable | resident |
| Wetlands (inland) | Permanent Rivers/Streams/Creeks (includes waterfalls) | suitable | resident |
| Altitude | 0 - 2400 m | Occasional altitudinal limits | (max) 2400 m |
Recommended citation
BirdLife International (2024) Species factsheet: Lesser Swamp-warbler Acrocephalus gracilirostris. Downloaded from
https://datazone.birdlife.org/species/factsheet/lesser-swamp-warbler-acrocephalus-gracilirostris on 25/12/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from
https://datazone.birdlife.org/species/search on 25/12/2024.