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 |
---|---|---|
- | - | A3c+4ac |
Year | Category | Criteria |
---|---|---|
2017 | Vulnerable | A3c+4ac |
2016 | Near Threatened | B1ab(iii) |
2012 | Near Threatened | B1ab(iii) |
2008 | Near Threatened | B1a+b(iii) |
2004 | Near Threatened | |
2000 | Lower Risk/Near Threatened | |
1994 | Lower Risk/Near Threatened | |
1988 | Near Threatened |
Migratory status | not a migrant | Forest dependency | high |
Land-mass type |
continent |
Average mass | 8 g |
Estimate | Data quality | |
---|---|---|
Extent of Occurrence (breeding/resident) | 289,000 km2 | medium |
Number of locations | 11-100 | - |
Severely fragmented? | no | - |
Estimate | Data quality | Derivation | Year of estimate | |
---|---|---|---|---|
Population size | unknown | - | - | - |
Population trend | decreasing | poor | suspected | 2009-2024 |
Rate of change over the future 10 years/3 generations (longer of the two periods) | 30-49% | - | - | - |
Rate of change over the past & future 10 years/3 generations (longer of the two periods) | 30-49% | - | - | - |
Generation length | 5.1 years | - | - | - |
Percentage of mature individuals in largest subpopulation | 100% | - | - | - |
Population justification: This is a poorly known species and its population size has not been quantified, but it is described as fairly common to common.
Trend justification: In the Brazilian Red List (MMA 2014) the species was predicted to lose 30-59% of its habitat by 2020 due to agriculture, deforestation and hydroelectric dam construction. Pending further information, the rate of ongoing and future declines over 3 generations (c.15 years) are suspected to be at least >30% over 3 generations.
Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
---|---|---|---|---|---|---|
Brazil | extant | native | yes |
Country/Territory | IBA Name |
---|---|
Brazil | Arquipélago de Anavilhanas |
Brazil | Parque Nacional do Jaú |
Brazil | Várzeas de Monte Alegre |
Brazil | Várzeas do Médio Rio Amazonas |
Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
---|---|---|---|
Forest | Subtropical/Tropical Swamp | major | resident |
Wetlands (inland) | Permanent Rivers/Streams/Creeks (includes waterfalls) | suitable | resident |
Altitude | 0 - 100 m | Occasional altitudinal limits |
Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
---|---|---|---|---|---|---|---|---|---|
Agriculture & aquaculture | Annual & perennial non-timber crops - Agro-industry farming | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
|||||||||
Biological resource use | Logging & wood harvesting - Unintentional effects: (large scale) [harvest] | Timing | Scope | Severity | Impact | ||||
Ongoing | Majority (50-90%) | Slow, Significant Declines | Medium Impact: 6 | ||||||
|
|||||||||
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 | Renewable energy | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Rapid Declines | Medium Impact: 6 | ||||||
|
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Natural system modifications | Dams & water management/use - Dams (size unknown) | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Rapid Declines | Medium Impact: 6 | ||||||
|
Recommended citation
BirdLife International (2024) Species factsheet: Klages's Antwren Myrmotherula klagesi. Downloaded from
https://datazone.birdlife.org/species/factsheet/klagess-antwren-myrmotherula-klagesi 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.