NT
Southern Banded Snake-eagle Circaetus fasciolatus



Taxonomy

Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 1: Non-passerines. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.

IUCN Red List criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - D1

Red List history
Year Category Criteria
2021 Near Threatened A2c+3c+4c; D1
2016 Near Threatened C1+2a(i)
2012 Near Threatened C1+2a(i)
2008 Near Threatened B1a+b(ii,iii,v); C1; C2a(i)
2004 Near Threatened
2000 Lower Risk/Near Threatened
1994 Lower Risk/Near Threatened
1988 Near Threatened
Species attributes

Migratory status not a migrant Forest dependency high
Land-mass type continent
Average mass -
Range

Estimate Data quality
Extent of Occurrence (breeding/resident) 2,130,000 km2 medium
Severely fragmented? no -
Population
Estimate Data quality Derivation Year of estimate
Population size 670-2000 mature individuals medium suspected 2001
Population trend decreasing - inferred 2000-2024
Rate of change over the past 10 years/3 generations (longer of the two periods) 6-29% - - -
Rate of change over the future 10 years/3 generations (longer of the two periods) 6-29% - - -
Rate of change over the past & future 10 years/3 generations (longer of the two periods) 6-29% - - -
Generation length 8.07 years - - -

Population justification: There are no robust population estimates for this species (Brink and Whitecross in prep. 2021). However, the species has a limited range (del Hoyo et al. 1994) and usually occurs at low densities (Seddon et al. 1999). The population is therefore suspected to fall into the band of 1,000-3,000 individuals, roughly equivalent to 670-2,000 mature individuals.

Trend justification: The population is inferred to be in decline owing to ongoing habitat destruction (Global Forest Watch 2021; Brink and Whitecross in prep. 2021). 

Modelling by Brink and Whitecross (in prep. 2021) estimated that habitat loss since 2000 ranged from 5.3% in areas with a probability of occurrence of >10%, to 19.3% loss in areas with a probability of occurrence of >80%. Assuming that the population declines at a similar rate to habitat loss, this is equivalent to a rate of decline of 6.4-23% over three generations (24.21 years [Bird et al. 2020]). The models used by Brink and Whitecross (in prep. 2021) did not account for land-use, and therefore may include suboptimal habitats such as plantations. The resulting calculations of percentage habitat loss are therefore likely to be underestimated, however there is currently no evidence suggesting that habitat loss or the consequent population decline is exceeding 30% over three generations. The rate of decline is therefore placed in the band 6-29% over three generations, and based on the current threats, it is suspected to continue at the same rate into the future.


Country/territory distribution
Country/Territory Presence Origin Resident Breeding visitor Non-breeding visitor Passage migrant
Kenya extant native yes
Mozambique extant native yes
Somalia extant native yes
South Africa extant native yes
Tanzania extant native yes
Zimbabwe extant native yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Kenya Arabuko-Sokoke Forest
Kenya Boni and Dodori National Reserves
Kenya Dakatcha Woodland
Kenya Diani Forest
Kenya Gede Ruins National Monument
Kenya Lower Tana River Forests
Kenya Shimba Hills
Kenya Taita Hills Forests
Kenya Tana River Delta
Mozambique Chimanimani Mountains (Mozambique)
Mozambique Maputo Special Reserve
Mozambique Mount Mabu
Mozambique Primeiras and Segundas Environmental Protection Area (APAIPS)
Mozambique Zambezi River Delta
Somalia Far Waamo
South Africa Hluhluwe-iMfolozi Park
South Africa iSimangaliso Wetland Park
South Africa Ndumo Game Reserve
South Africa Umlalazi Nature Reserve
Tanzania Bagamoyo District Coastal Forests
Tanzania East Usambara Mountains
Tanzania Handeni District Coastal Forests
Tanzania Kilombero Valley
Tanzania Kilwa District Coastal Forests
Tanzania Kisarawe District Coastal Forests
Tanzania Lindi District Coastal Forests
Tanzania Mtwara District Coastal Forests
Tanzania Muheza District Coastal Forests
Tanzania Newala District Coastal Forests
Tanzania Nguu Mountains
Tanzania Pande Game Reserve and Dondwe Coastal Forests
Tanzania Pangani District Coastal Forests
Tanzania Rufiji District Coastal Forests
Tanzania Selous Game Reserve
Tanzania Udzungwa Mountains
Tanzania Udzungwa National Park
Tanzania Uluguru Mountains
Tanzania West Usambara Mountains
Zimbabwe Chimanimani Mountains (Zimbabwe)
Zimbabwe Haroni - Rusitu junction and Botanical Reserves
Zimbabwe Save - Runde junction

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Moist Lowland major resident
Altitude 0 - 1500 m Occasional altitudinal limits  

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Annual & perennial non-timber crops - Small-holder farming Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion
Biological resource use Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest] Timing Scope Severity Impact
Ongoing Whole (>90%) Slow, Significant Declines Medium Impact: 7
Stresses
Ecosystem degradation, Ecosystem conversion
Climate change & severe weather Habitat shifting & alteration Timing Scope Severity Impact
Future Minority (<50%) Unknown Unknown
Stresses
Ecosystem degradation, Ecosystem conversion

Utilisation
Purpose Scale
Pets/display animals, horticulture international

Recommended citation
BirdLife International (2024) Species factsheet: Southern Banded Snake-eagle Circaetus fasciolatus. Downloaded from https://datazone.birdlife.org/species/factsheet/southern-banded-snake-eagle-circaetus-fasciolatus on 26/12/2024.
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 26/12/2024.