Taxonomic note
Myiothlypis conspicillata (del Hoyo and Collar 2016) was previously placed in the genus Basileuterus and listed as B. conspicillatus 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 | Near Threatened | B1b(iii) |
2016 | Near Threatened | A2c+3c+4c;B1ab(i,ii,iii,v) |
2012 | Near Threatened | A2c+3c+4c;B1ab(i,ii,iii,v) |
2008 | Near Threatened | A2c; A3c; A4c; B1a+b(i,ii,iii,v) |
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 | medium |
Land-mass type |
continent |
Average mass | - |
Estimate | Data quality | |
---|---|---|
Extent of Occurrence (breeding/resident) | 10,500 km2 | medium |
Area of Occupancy (breeding/resident) | 8,640 km2 | |
Severely fragmented? | no | - |
Estimate | Data quality | Derivation | Year of estimate | |
---|---|---|---|---|
Population size | 10300-20600 mature individuals | poor | inferred | 2016 |
Population trend | decreasing | poor | suspected | 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 | 2.55 years | - | - | - |
Number of subpopulations | 1 | - | - | - |
Percentage of mature individuals in largest subpopulation | 100% | - | - | - |
Population justification: The global population size has not been quantified, but the species is described as common, particularly between 1,000 and 1,500 m (Stotz et al. 1996, Gómez Montes 2020).
Based on the population density of related species (Basileuterus melanogenys: 5 individuals/km2; M. nigrocristata and M. luteoviridis: 10 individuals/km2) and an area of occupied habitat of 3,091 km2, the population was inferred to number 15,450-30,900 individuals (Renjifo et al. 2016 and references therein). This roughly equates to 10,300-20,600 mature individuals.
Trend justification: Despite some tolerance of converted habitats, the species is absent in areas without a continuous, dense understory (Renjifo et al. 2016). Therefore, it is suspected to undergo a decline as a consequence of the loss and degradation of its habitat.
Within the range, 4% of tree cover have been lost over the past ten years; since 2017 this has been increasing to a rate equivalent to 6% over ten years (Global Forest Watch 2022, using Hansen et al. [2013] data and methods disclosed therein). It is assumed that population declines may be roughly equivalent to the rate of tree cover loss; they are here placed in the band 1-9% over ten years.
Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
---|---|---|---|---|---|---|
Colombia | extant | native | yes |
Country/Territory | IBA Name |
---|---|
Colombia | Cuchilla de San Lorenzo |
Colombia | Eco-parque Los Besotes |
Colombia | Valle de San Salvador |
Colombia | Valle del Río Frío |
Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
---|---|---|---|
Artificial/Terrestrial | Plantations | suitable | resident |
Artificial/Terrestrial | Subtropical/Tropical Heavily Degraded Former Forest | suitable | resident |
Forest | Subtropical/Tropical Moist Lowland | suitable | resident |
Forest | Subtropical/Tropical Moist Montane | major | resident |
Altitude | 450 - 2830 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 | 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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Natural system modifications | Fire & fire suppression - Increase in fire frequency/intensity | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
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Recommended citation
BirdLife International (2024) Species factsheet: White-lored Warbler Myiothlypis conspicillata. Downloaded from
https://datazone.birdlife.org/species/factsheet/white-lored-warbler-myiothlypis-conspicillata 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.