Data Zone
Taxonomic note
Previously (Handbook of the Birds of the World and BirdLife International 2022) placed in Nesocharis but moved to current genus following Olsson and Alström (2020). Monotypic.
Taxonomic source(s)
Handbook of the Birds of the World and BirdLife International. 2023. Handbook of the Birds of the World and BirdLife International digital checklist of the birds of the world. Version 8. Available at: https://datazone.birdlife.org/userfiles/file/Species/Taxonomy/HBW-BirdLife_Checklist_v8_Dec23.zip.
| 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 | low |
| Land-mass type | Average mass | - |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence (breeding/resident) | 3,650,000 km2 | medium |
| Severely fragmented? | no | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Population size | unknown | - | - | - |
| Population trend | stable | - | suspected | - |
| Generation length | 2.17 years | - | - | - |
Population justification: The global population size has not been quantified, but the species is reported to be nowhere common (Fry and Keith 2004). The population is suspected to be stable in the absence of evidence for any declines or substantial threats.
Trend justification: The population is suspected to be stable in the absence of evidence for any declines or substantial threats.
| Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
|---|---|---|---|---|---|---|
| Benin | extant | native | yes | |||
| Burkina Faso | extant | native | yes | |||
| Cameroon | extant | native | yes | |||
| Central African Republic | extant | native | yes | |||
| Congo, The Democratic Republic of the | extant | native | yes | |||
| Côte d'Ivoire | extant | native | yes | |||
| Gambia | extant | vagrant | yes | |||
| Ghana | extant | native | yes | |||
| Guinea | extant | native | yes | |||
| Guinea-Bissau | extant | native | yes | |||
| Mali | extant | native | yes | |||
| Nigeria | extant | native | yes | |||
| Sierra Leone | extant | native | yes | |||
| South Sudan | extant | native | yes | |||
| Sudan | extant | native | yes | |||
| Togo | extant | native | yes | |||
| Uganda | extant | native | yes |
| Country/Territory | IBA Name |
|---|---|
| Benin | Ouémé river basin |
| Burkina Faso | Bérégadougou hill |
| Cameroon | Bénoué National Park |
| Cameroon | Ngaoundaba Ranch |
| Central African Republic | Bamingui-Bangoran National Park complex |
| Central African Republic | Bozoum |
| Central African Republic | Manovo - Gounda - St Floris National Park complex |
| Congo, The Democratic Republic of the | Garamba National Park |
| Côte d'Ivoire | Comoe National Park |
| Côte d'Ivoire | Sangbe Mountain National Park |
| Ghana | Mole National Park |
| Guinea | Mafou |
| Guinea-Bissau | Cantanhez forests |
| Guinea-Bissau | Dulombi |
| Guinea-Bissau | Rio Mansôa and Gêba estuary |
| Mali | Bafing |
| Nigeria | Amurum woodlands (Taboru) |
| Nigeria | Falgore and Lame Burra Game Reserves |
| Nigeria | Gashaka-Gumti National Park |
| Nigeria | Kagoro - Nindam Forest Reserves and vicinity |
| Nigeria | Kainji Lake National Park |
| Nigeria | Kamuku National Park |
| Nigeria | Yankari Game Reserve |
| Uganda | Ajai Wildlife Reserve |
| Uganda | Budongo Forest Reserve |
| Uganda | Mount Kei Forest Reserve |
| Uganda | Murchison Falls National Park |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Savanna | Dry | suitable | resident |
| Shrubland | Subtropical/Tropical Moist | suitable | resident |
| Wetlands (inland) | Bogs, Marshes, Swamps, Fens, Peatlands | suitable | resident |
| Wetlands (inland) | Permanent Rivers/Streams/Creeks (includes waterfalls) | suitable | resident |
| Altitude | Occasional altitudinal limits |
| Purpose | Scale |
|---|---|
| Pets/display animals, horticulture | international |
Recommended citation
BirdLife International (2024) Species factsheet: Grey-headed Oliveback Delacourella capistrata. Downloaded from
https://datazone.birdlife.org/species/factsheet/grey-headed-oliveback-delacourella-capistrata 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.