Data Zone
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: #http://www.museum.lsu.edu/~Remsen/SACCBaseline.htm#.
| Critically Endangered | Endangered | Vulnerable |
|---|---|---|
| - | - | B1ab(i,ii,iii,v); C2a(i) |
| Year | Category | Criteria |
|---|---|---|
| 2016 | Vulnerable | B1ab(i,ii,iii,v);C2a(i) |
| 2012 | Vulnerable | B1ab(i,ii,iii,v);C2a(i) |
| 2008 | Vulnerable | B1a+b(i,ii,iii); C2a(i) |
| 2004 | Vulnerable | |
| 2002 | Vulnerable | |
| 2000 | Not Recognised | |
| 1994 | Not Recognised | |
| 1988 | Not Recognised |
| Migratory status | not a migrant | Forest dependency | does not normally occur in forest |
| Land-mass type |
Land-mass type - continent |
Average mass | - |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence breeding/resident (km2) | 23,400 | medium |
| Area of Occupancy breeding/resident (km2) | 2,000 | medium |
| Number of locations | 10 | - |
| Severely fragmented? | no | - |
| Value | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Number of mature individuals | 1000-2499 | poor | estimated | 2003 |
| Population trend | decreasing | poor | suspected | 1998-2008 |
| Decline % (10 years/3 generations future) | 20-29 | - | - | - |
| Decline % (10 years/3 generations past and future) | 20-29 | - | - | - |
| Number of subpopulations | 2-100 | - | - | - |
| Percentage in largest subpopulation | 1-89 | - | - | - |
| Generation length (years) | 4.8 | - | - | - |
Population justification: Population estimate = 2.6-9.6 individuals/km2 x 270 km2 (45% EOO) = 702-2,592, i.e. probably best placed in the band 1,000-2,499 as described as common in suitable habitat (density range from estimates for two congeners in the BirdLife Population Densities Spreadsheet).
Trend justification: This species's population is suspected to be declining rapidly, in line with rates of habitat loss within its range.
| Country/Territory | Presence | Origin | Resident | Breeding | Non-breeding | Passage |
|---|---|---|---|---|---|---|
| Brazil | extant | native | yes |
| Country/Territory | IBA Name |
|---|---|
| Brazil | Una |
| Brazil | Ilhéus / Itabuna |
| Brazil | Foz dos Rios Pardo e Jequitinhonha and Santa Cruz Cabrália / Belmonte |
| Brazil | Estação Veracruz |
| Brazil | Parque Nacional do Pau Brasil / Trancoso |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Savanna | Dry | major | resident |
| Altitude | 0 - 10 m | Occasional altitudinal limits |
| Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Agriculture & aquaculture | Livestock farming & ranching - Agro-industry grazing, ranching or farming | 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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| Residential & commercial development | Tourism & recreation areas | Timing | Scope | Severity | Impact | ||||
| Future | Majority (50-90%) | Rapid Declines | Medium Impact: 6 | ||||||
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Recommended citation
BirdLife International (2023) Species factsheet: Herpsilochmus pileatus. Downloaded from
http://datazone.birdlife.org/species/factsheet/bahia-antwren-herpsilochmus-pileatus on 25/09/2023.
Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from
http://datazone.birdlife.org on 25/09/2023.
