Data Zone
Taxonomic note
Cantorchilus semibadius (del Hoyo and Collar 2016) was previously listed as Thryothorus semibadius.
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.
| Critically Endangered | Endangered | Vulnerable |
|---|---|---|
| - | - | - |
| Year | Category | Criteria |
|---|---|---|
| 2023 | Least Concern | |
| 2016 | Least Concern | |
| 2012 | Least Concern | |
| 2009 | Least Concern | |
| 2008 | Least Concern | |
| 2004 | Least Concern | |
| 2000 | Lower Risk/Least Concern | |
| 1994 | Lower Risk/Least Concern | |
| 1988 | Lower Risk/Least Concern |
| Migratory status | not a migrant | Forest dependency | medium |
| Land-mass type | Average mass | - |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence (breeding/resident) | 24,900 km2 | medium |
| Area of Occupancy (breeding/resident) | 16,500 km2 | |
| Severely fragmented? | no | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Population size | 20000-49999 mature individuals | poor | suspected | 2022 |
| Population trend | stable | - | suspected | - |
| Generation length | 2.83 years | - | - | - |
Population justification: The global population is suspected to number fewer than 50,000 mature individuals (Partners in Flight 2022); thus it is here placed in the band 20,000-49,999 mature individuals. The species is described as common in suitable habitat (Kroodsma and Brewer 2020).
Trend justification:
The population trend has not been investigated. Tree cover within the range is lost at a rate of 4% over ten years (Global Forest Watch 2022, using Hansen et al. [2013] data and methods disclosed therein). The species is however not restricted to forests; it is also found in any type of dense vegetation and edge habitat (Kroodsma and Brewer 2020); consequently, the current rate of tree cover loss may not be affecting the population. Therefore, in the absence of evidence for any declines or substantial threats, the population is suspected to be stable.
| Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
|---|---|---|---|---|---|---|
| Costa Rica | extant | native | yes | |||
| Panama | extant | native | yes |
| Country/Territory | IBA Name |
|---|---|
| Costa Rica | El Rodeo, Cerros de Escazú and La Carpintera |
| Costa Rica | Fila Costeña |
| Costa Rica | Los Santos, La Amistad Pacífico |
| Costa Rica | Sierpe Wetlands and Osa Peninsula |
| Costa Rica | Tárcoles, Carara and La Cangreja |
| Panama | El Chorogo-Palo Blanco |
| Panama | Quebrada Mellicita-Charco Azul |
| Panama | Santa Clara |
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Forest | Subtropical/Tropical Moist Lowland | suitable | resident |
| Forest | Subtropical/Tropical Swamp | suitable | resident |
| Shrubland | Subtropical/Tropical Moist | suitable | resident |
| Wetlands (inland) | Permanent Rivers/Streams/Creeks (includes waterfalls) | suitable | resident |
| Altitude | 0 - 1430 m | Occasional altitudinal limits |
Recommended citation
BirdLife International (2024) Species factsheet: Riverside Wren Cantorchilus semibadius. Downloaded from
https://datazone.birdlife.org/species/factsheet/riverside-wren-cantorchilus-semibadius on 23/11/2024.
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 23/11/2024.