This species has an extremely 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.
del Hoyo, J.; Collar, N. J.; Christie, D. A.; Elliott, A.; Fishpool, L. D. C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Barcelona, Spain and Cambridge UK: Lynx Edicions and BirdLife International.
Barnes, K. N. 2000. The Eskom Red Data Book of birds of South Africa, Lesotho and Swaziland. BirdLife South Africa, Johannesburg.
Begg, G. W. 1986. The wetlands of Natal (part 1): an overview of their extent, role and present status. Natal Town and Regional Planning Commission, Pietermaritzburg, South Africa.
Brown, L. H.; Urban, E. K.; Newman, K. 1982. The birds of Africa vol I. Academic Press, London.
de Kock, A. C.; Simmons, R. 1988. Chlorinated hydrocarbon residues in African Marsh Harrier eggs and concurrent reproductive trends. Ostrich 59: 180-181.
Ferguson-Lees, J.; Christie, D. A. 2001. Raptors of the world. Christopher Helm, London.
Ginn, P. J.; McIlleron, W. G.; Milstein, P. le S. 1989. The complete book of southern African birds. Struik Winchester, Cape Town.
Kemp, A.; Dean, R. 1988. Diet of African Marsh Harriers from pellets. Gabar 3: 54-55.
Further web sources of information
Explore HBW Alive for further information on this species
Text account compilers
Butchart, S., Ekstrom, J., Harding, M. & Symes, A.
BirdLife International (2015) Species factsheet: Circus ranivorus. Downloaded from http://www.birdlife.org on 07/07/2015. Recommended citation for factsheets for more than one species: BirdLife International (2015) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 07/07/2015.
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
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Additional resources for this species
|Current IUCN Red List category||Least Concern|
|Family||Accipitridae (Hawks, Eagles)|
|Species name author||(Daudin, 1800)|
|Population size||Unknown mature individuals|
|Distribution size (breeding/resident)||4,390,000 km2|
|Links to further information|
- Additional Information on this species|
- Projected distributions under climate change