Data Zone
Taxonomic note
Drymotoxeres pucheranii (del Hoyo and Collar 2016) was previously listed as Drymotoxeres pucherani.
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.
SACC. 2005 and updates. A classification of the bird species of South America. Available at: https://www.museum.lsu.edu/~Remsen/SACCBaseline.htm.
| Critically Endangered | Endangered | Vulnerable |
|---|---|---|
| - | - | - |
| Year | Category | Criteria |
|---|---|---|
| 2023 | Least Concern | |
| 2016 | Near Threatened | A2c+3c+4c |
| 2012 | Near Threatened | A2c+3c+4c |
| 2008 | Near Threatened | A2c; A3c; A4c |
| 2004 | Near Threatened | |
| 2000 | Lower Risk/Near Threatened | |
| 1994 | Lower Risk/Near Threatened | |
| 1988 | Lower Risk/Least Concern |
| Migratory status | not a migrant | Forest dependency | high |
| Land-mass type |
continent |
Average mass | - |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence (breeding/resident) | 1,540,000 km2 | medium |
| Severely fragmented? | no | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Population size | unknown | - | - | - |
| Population trend | decreasing | poor | suspected | 2017-2030 |
| Rate of change over the past 10 years/3 generations (longer of the two periods) | 1-19% | - | - | - |
| Rate of change over the future 10 years/3 generations (longer of the two periods) | 1-19% | - | - | - |
| Rate of change over the past & future 10 years/3 generations (longer of the two periods) | 1-19% | - | - | - |
| Generation length | 4.18 years | - | - | - |
| Number of subpopulations | 2-100 | - | - | - |
| Percentage of mature individuals in largest subpopulation | 1-89% | - | - | - |
Population justification: The global population size has not been quantified, but this species is described as rare; its distribution is patchy and localised (Stotz et al. 1996, Marantz et al. 2020, eBird 2022).
The population in Ecuador is suspected to number just above 10,000 mature individuals (per Freile et al. 2019).
Trend justification: A slow population decline is suspected to be occurring, owing to ongoing habitat loss and degradation throughout the range.
Tree cover within the range is lost at a rate of 2% over three generations (12.5 years; Global Forest Watch 2022, using Hansen et al. [2013] data and methods disclosed therein). Despite occasionally being found outside of forests, the species is described as highly sensitive to disturbance and habitat degradation (Marantz et al. 2020) and consequently, population declines may exceed the rate of tree cover loss. Tentatively, they are here placed in the band 1-19% over three generations, but an accurate quantification of the trend is urgently required.
| Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
|---|---|---|---|---|---|---|
| Colombia | extant | native | yes | |||
| Ecuador | extant | native | yes | |||
| Peru | extant | native | yes |
| Country/Territory | IBA Name |
|---|---|
| Colombia | Eco-parque Los Besotes |
| Colombia | Farallones de Cali Natural National Park |
| Colombia | Munchique Natural National Park and southern extension |
| Colombia | Reserva Natural Tambito |
| Ecuador | Cordillera de Huacamayos-San Isidro-Sierra Azul |
| Ecuador | Manteles - El Triunfo - Sucre |
| Ecuador | Mindo and western foothills of Volcan Pichincha |
| Ecuador | Montañas de Zapote-Najda |
| Ecuador | Parque Nacional Cayambe-Coca |
| Ecuador | Reserva Ecológica Antisana (west) and adjacent areas |
| Peru | Cordillera del Cóndor |
| Peru | Manu |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Forest | Subtropical/Tropical Moist Montane | major | resident |
| Altitude | 1000 - 3250 m | Occasional altitudinal limits | (min) 900 m |
| 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 | ||||||
|
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| Agriculture & aquaculture | Livestock farming & ranching - Small-holder grazing, ranching or farming | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
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| Agriculture & aquaculture | Wood & pulp plantations - Small-holder plantations | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
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| Biological resource use | Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest] | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
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| Energy production & mining | Mining & quarrying | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
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Recommended citation
BirdLife International (2024) Species factsheet: Greater Scythebill Drymotoxeres pucheranii. Downloaded from
https://datazone.birdlife.org/species/factsheet/greater-scythebill-drymotoxeres-pucheranii on 23/11/2024.
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 23/11/2024.