Data Zone
Taxonomic note
Calherodius leuconotus (del Hoyo and Collar 2014) was previously placed in the genus Gorsachius.
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.
| Critically Endangered | Endangered | Vulnerable |
|---|---|---|
| - | - | - |
| Year | Category | Criteria |
|---|---|---|
| 2018 | 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 | full migrant | Forest dependency | medium |
| Land-mass type | Average mass | - |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence (breeding/resident) | 20,900,000 km2 | medium |
| Severely fragmented? | no | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Population size | unknown | poor | suspected | 2009 |
| Population trend | decreasing | - | inferred | - |
| Generation length | 6.7 years | - | - | - |
Population justification: The population is suspected to be in the range 25,000-100,000 individuals (Wetlands International 2018).
Trend justification:
The species is tentatively assessed as being in decline due to habitat loss per Tracewski et al. (2016).
| Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
|---|---|---|---|---|---|---|
| Angola | extant | native | ||||
| Benin | extant | native | ||||
| Botswana | extant | native | ||||
| Burkina Faso | extant | native | ||||
| Burundi | extant | native | yes | |||
| Cameroon | extant | native | ||||
| Congo | extant | native | ||||
| Congo, The Democratic Republic of the | extant | native | ||||
| Côte d'Ivoire | extant | native | ||||
| Equatorial Guinea | extant | native | yes | |||
| Eritrea | extant | vagrant | ||||
| Eswatini | extant | native | ||||
| Ethiopia | extant | native | ||||
| Gabon | extant | native | ||||
| Gambia | extant | native | ||||
| Ghana | extant | native | ||||
| Guinea-Bissau | extant | native | ||||
| Kenya | extant | native | ||||
| Liberia | extant | native | ||||
| Malawi | extant | native | ||||
| Mali | extant | native | ||||
| Mauritania | extant | vagrant | ||||
| Mozambique | extant | native | ||||
| Namibia | extant | native | ||||
| Niger | extant | vagrant | ||||
| Nigeria | extant | native | ||||
| Rwanda | extant | vagrant | ||||
| Senegal | extant | native | ||||
| Sierra Leone | extant | native | ||||
| South Africa | extant | native | ||||
| South Sudan | extant | native | yes | |||
| Sudan | extant | native | ||||
| Tanzania | extant | native | ||||
| Togo | extant | native | ||||
| Uganda | extant | native | ||||
| Zambia | extant | native | ||||
| Zimbabwe | extant | native |
| Country/Territory | IBA Name |
|---|---|
| Botswana | Okavango Delta |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Forest | Subtropical/Tropical Mangrove Vegetation Above High Tide Level | suitable | non-breeding |
| Forest | Subtropical/Tropical Mangrove Vegetation Above High Tide Level | suitable | breeding |
| Forest | Subtropical/Tropical Moist Lowland | suitable | non-breeding |
| Forest | Subtropical/Tropical Moist Lowland | suitable | breeding |
| Wetlands (inland) | Permanent Freshwater Lakes (over 8ha) | suitable | non-breeding |
| Wetlands (inland) | Permanent Freshwater Lakes (over 8ha) | suitable | breeding |
| Wetlands (inland) | Permanent Freshwater Marshes/Pools (under 8ha) | suitable | non-breeding |
| Wetlands (inland) | Permanent Freshwater Marshes/Pools (under 8ha) | suitable | breeding |
| Wetlands (inland) | Permanent Rivers/Streams/Creeks (includes waterfalls) | suitable | non-breeding |
| Wetlands (inland) | Permanent Rivers/Streams/Creeks (includes waterfalls) | suitable | breeding |
| Wetlands (inland) | Seasonal/Intermittent Freshwater Lakes (over 8ha) | suitable | non-breeding |
| Wetlands (inland) | Seasonal/Intermittent Freshwater Lakes (over 8ha) | suitable | breeding |
| Wetlands (inland) | Seasonal/Intermittent Freshwater Marshes/Pools (under 8ha) | suitable | non-breeding |
| Wetlands (inland) | Seasonal/Intermittent Freshwater Marshes/Pools (under 8ha) | suitable | breeding |
| Altitude | Occasional altitudinal limits |
| Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Agriculture & aquaculture | Annual & perennial non-timber crops - Scale Unknown/Unrecorded | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
|||||||||
| Agriculture & aquaculture | Livestock farming & ranching - Scale Unknown/Unrecorded | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
|||||||||
| Natural system modifications | Dams & water management/use - Abstraction of surface water (unknown use) | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
|||||||||
| Pollution | Agricultural & forestry effluents - Soil erosion, sedimentation | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
|||||||||
| Purpose | Scale |
|---|---|
| Medicine - human & veterinary | subsistence |
Recommended citation
BirdLife International (2024) Species factsheet: White-backed Night Heron Calherodius leuconotus. Downloaded from
https://datazone.birdlife.org/species/factsheet/white-backed-night-heron-calherodius-leuconotus on 22/11/2024.
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 22/11/2024.