Taxonomic note
Myiothlypis cinereicollis (del Hoyo and Collar 2016) was previously placed in the genus Basileuterus following SACC (2005 & updates); Sibley & Monroe (1990, 1993); Stotz et al. (1996).
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 | Threatened |
Migratory status | not a migrant | Forest dependency | medium |
Land-mass type |
continent |
Average mass | - |
Estimate | Data quality | |
---|---|---|
Extent of Occurrence (breeding/resident) | 199,000 km2 | medium |
Severely fragmented? | no | - |
Estimate | Data quality | Derivation | Year of estimate | |
---|---|---|---|---|
Population size | unknown | - | - | - |
Population trend | decreasing | poor | inferred | 2017-2027 |
Rate of change over the past 10 years/3 generations (longer of the two periods) | 1-9% | - | - | - |
Rate of change over the future 10 years/3 generations (longer of the two periods) | 1-9% | - | - | - |
Rate of change over the past & future 10 years/3 generations (longer of the two periods) | 1-9% | - | - | - |
Generation length | 2.56 years | - | - | - |
Number of subpopulations | 3-100 | - | - | - |
Percentage of mature individuals in largest subpopulation | 1-89% | - | - | - |
Population justification: The global population size has not been quantified, but the species is described as uncommon and rare to locally common (Curson 2020, T. Donegan in litt. 2023). It is patchily distributed within its range (T. Donegan in litt. 2023).
Trend justification: The species is reportedly becoming rarer in lower elevations as a consequence of forest loss (Curson 2020). Tree cover loss within the range is low (2% over ten years; Global Forest Watch 2022, using Hansen et al. [2013] data and methods disclosed therein). Population declines are therefore likely equally low and localised; they are here tentatively placed in the band 1-9% over ten years. The rate of population decline may however vary across the range and locally be higher (per E. Botero-Delgadillo in litt. 2023, T. Donegan in litt. 2023).
Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
---|---|---|---|---|---|---|
Colombia | extant | native | yes | |||
Venezuela | extant | native | yes |
Country/Territory | IBA Name |
---|---|
Colombia | Parque Nacional Natural Tamá |
Colombia | Serranía de las Quinchas |
Venezuela | Parque Nacional Perijá |
Venezuela | Zona Protectora San Rafael de Guasare |
Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
---|---|---|---|
Forest | Subtropical/Tropical Moist Lowland | suitable | resident |
Forest | Subtropical/Tropical Moist Montane | major | resident |
Altitude | 600 - 2660 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 - Small-holder grazing, ranching or farming | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
|||||||||
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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Residential & commercial development | Housing & urban areas | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Negligible declines | Low Impact: 4 | ||||||
|
Recommended citation
BirdLife International (2024) Species factsheet: Grey-throated Warbler Myiothlypis cinereicollis. Downloaded from
https://datazone.birdlife.org/species/factsheet/grey-throated-warbler-myiothlypis-cinereicollis on 23/12/2024.
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 23/12/2024.