Data Zone
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.
SACC. 2005 and updates. A classification of the bird species of South America. Available at: #http://www.museum.lsu.edu/~Remsen/SACCBaseline.htm#.
| Critically Endangered | Endangered | Vulnerable |
|---|---|---|
| - | - | - |
| Year | Category | Criteria |
|---|---|---|
| 2021 | Least Concern | |
| 2016 | Near Threatened | C1+2a(i) |
| 2012 | Near Threatened | C1+2a(i) |
| 2008 | Near Threatened | C1; C2a(i) |
| 2004 | Near Threatened | |
| 2000 | Lower Risk/Near Threatened | |
| 1994 | Lower Risk/Near Threatened | |
| 1988 | Near Threatened |
| Migratory status | not a migrant | Forest dependency | Low |
| Land mass type |
Land-mass type - continent |
Average mass | - |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence breeding/resident (km2) | 87,600 | medium |
| Number of locations | - | |
| Severely Fragmented | - |
| Value | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| No. of mature individuals | 2500-9999 | poor | inferred | 2021 |
| Population trend | Decreasing | poor | suspected | - |
| Decline (3 years/1 generation past) | - | - | - | |
| Decline (5 years/1 generation past) | - | - | - | |
| Decline (10 years/1 generation past) | - | - | - | |
| Decline (10 years/3 generation future) | - | - | - | |
| Decline (10 years/3 generation past and future) | - | - | - | |
| Number of subpopulations | 3 | - | - | - |
| Percentage in largest subpopulation | 1-89 | - | - | - |
Population justification: The population size has not been quantified directly. A congener (O. leucopleurus in Argentina) occurs at a density of 4-12 individuals/km2 (Santini et al. 2018); however this is likely not representative for O. adela, whose density is considered not to exceed 4 individuals/km2 (S. K. Herzog in litt. 2021). Assuming that only 10% of the mapped range is occupied to account for the species's rarity (i.e. 3,800 km2), the species may number at most 15,200 individuals, which roughly equates to 10,000 mature individuals. The population size is consequently here placed in the band 2,500-9,999 mature individuals.
Assuming that the species forms three separate subpopulations within its range, that 10% of the range is occupied at a density of up to 4 individuals/km2, the largest subpopulation (occupying an area of 1,700 km2, based on the area of the range polygon) may number up to 4,500 mature individuals.
Trend justification: The population trend has not been quantified. The species is able to tolerate substantial habitat degradation (Fjeldså and Kirwan 2020). However, due to the high anthropogenic pressure on natural habitat within the range, the species is precautionarily suspected to decline slowly owing to habitat degradation and destruction.
| Country/Territory | Occurrence status | Presence | Resident | Breeding | Non-breeding | Passage |
|---|---|---|---|---|---|---|
| Argentina | N | Extant | Yes | |||
| Bolivia | N | Extant | Yes |
| Country/Territory | IBA Name |
|---|---|
| Bolivia | Reserva Biológica Cordillera de Sama |
| Bolivia | Cuencas de Ríos Caine y Mizque |
| Bolivia | Southern slopes of Tunari National Park (Vertiente Sur del Parque Nacional Tunari IBA) |
| Argentina | Santa Victoria, Cañani y Cayotal |
| Argentina | Queñoales de Santa Catalina |
| Argentina | Yavi y Yavi Chico |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Forest | Subtropical/Tropical Moist Montane | major | resident |
| Shrubland | Subtropical/Tropical High Altitude | major | resident |
| Altitude | 2550 - 4000 m | Occasional altitudinal limits |
| 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 - Agro-industry grazing, ranching or farming | Timing | Scope | Severity | Impact | ||||
| Ongoing | Majority (50-90%) | Slow, Significant Declines | Medium Impact: 6 | ||||||
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| Agriculture & aquaculture | Wood & pulp plantations - Scale Unknown/Unrecorded | 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: (large scale) [harvest] | Timing | Scope | Severity | Impact | ||||
| Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
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| Natural system modifications | Fire & fire suppression - Trend Unknown/Unrecorded | Timing | Scope | Severity | Impact | ||||
| Ongoing | Majority (50-90%) | Slow, Significant Declines | Medium Impact: 6 | ||||||
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Recommended citation
BirdLife International (2023) Species factsheet: Oreotrochilus adela. Downloaded from
http://www.birdlife.org on 05/02/2023.
Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from
http://www.birdlife.org on 05/02/2023.
