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.
| Critically Endangered | Endangered | Vulnerable |
|---|---|---|
| - | - | - |
| Year | Category | Criteria |
|---|---|---|
| 2021 | 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 | full migrant | Forest dependency | does not normally occur in forest |
| Land-mass type | Average mass | - |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence breeding/resident (km2) | 13,100,000 | medium |
| Extent of Occurrence non-breeding (km2) | 10,900,000 | medium |
| Severely fragmented? | no | - |
| Value | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Number of mature individuals | 11000000 | poor | inferred | 2019 |
| Population trend | increasing | inferred | - | |
| Generation length (years) | 2.71 | - | - | - |
Population justification: The global population is inferred to number 11 million mature individuals (Partners in Flight 2019).
Trend justification: The species has been undergoing a large, significant increase at an average rate of 2.1% per year between 1970 and 2017 (Partners in Flight 2019). Short-term trends suggest that the population in North America has increased by 37% over the past ten years (Pardieck et al. 2018).
| Country/Territory | Presence | Origin | Resident | Breeding | Non-breeding | Passage |
|---|---|---|---|---|---|---|
| Bermuda (to UK) | extant | vagrant | ||||
| Canada | extant | native | yes | yes | yes | |
| Cuba | extant | vagrant | ||||
| Greenland (to Denmark) | extant | vagrant | ||||
| Mexico | extant | native | yes | yes | ||
| USA | extant | native | yes | yes | yes | yes |
| Country/Territory | IBA Name |
|---|
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Marine Intertidal | Salt Marshes (Emergent Grasses) | suitable | non-breeding |
| Marine Intertidal | Salt Marshes (Emergent Grasses) | suitable | breeding |
| Wetlands (inland) | Bogs, Marshes, Swamps, Fens, Peatlands | major | non-breeding |
| Wetlands (inland) | Bogs, Marshes, Swamps, Fens, Peatlands | major | breeding |
| Wetlands (inland) | Permanent Freshwater Marshes/Pools (under 8ha) | suitable | non-breeding |
| Wetlands (inland) | Permanent Freshwater Marshes/Pools (under 8ha) | suitable | breeding |
| Wetlands (inland) | Permanent Saline, Brackish or Alkaline Marshes/Pools | suitable | non-breeding |
| Wetlands (inland) | Permanent Saline, Brackish or Alkaline Marshes/Pools | suitable | breeding |
| Altitude | 0 - 2500 m | Occasional altitudinal limits |
Recommended citation
BirdLife International (2023) Species factsheet: Cistothorus palustris. Downloaded from
http://datazone.birdlife.org/species/factsheet/marsh-wren-cistothorus-palustris on 26/09/2023.
Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from
http://datazone.birdlife.org on 26/09/2023.
