LC
Grass Wren Cistothorus platensis



Taxonomy

Taxonomic note
Cistothorus platensis and C. stellaris (del Hoyo and Collar 2016) were previously lumped as C. platensis (see AOU [1998 & supplements]; 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.

IUCN Red list criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - -

Red List history
Year Category Criteria
2016 Least Concern
Species attributes

Migratory status full migrant Forest dependency Does not normally occur in forest
Land mass type Average mass 11.80000019 g
Extent of occurrence (EOO)

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 28,000,000 medium
Extent of Occurrence non-breeding (km2) 6,240,000 medium
Number of locations -
Fragmentation -
Population and trend
Estimate Data quality Derivation Year of estimate
No. of mature individuals poor not applicable 2009
Population trend Increasing estimated -
Decline (3 years/1 generation past) - - -
Decline (5 years/1 generation past) - - -
Decline (10 years/1 generation past) - - -
Decline (10 years/3 generation future) - - -
Decline (10 years/3 generation past and future) - - -
Number of subpopulations - - -
Largest subpopulations - - -
Generation length (yrs) 3.5 - - -

Population justification: The population has not been quantified.


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Argentina N Extant Yes
Belize N Extant Yes
Bolivia N Extant Yes
Colombia N Extant Yes
Costa Rica N Extant Yes
Guatemala N Extant Yes
Guyana N Extant Yes
Honduras N Extant Yes
Mexico N Extant Yes
Nicaragua N Extant Yes
Panama N Extant Yes
Peru N Extant Yes
Venezuela N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Pastureland suitable breeding
Artificial/Terrestrial Pastureland suitable non-breeding
Grassland Subtropical/Tropical High Altitude suitable breeding
Grassland Subtropical/Tropical High Altitude suitable non-breeding
Grassland Subtropical/Tropical Seasonally Wet/Flooded suitable non-breeding
Grassland Subtropical/Tropical Seasonally Wet/Flooded suitable breeding
Grassland Temperate suitable breeding
Grassland Temperate suitable non-breeding
Savanna Dry suitable non-breeding
Savanna Dry suitable breeding
Wetlands (inland) Bogs, Marshes, Swamps, Fens, Peatlands suitable breeding
Wetlands (inland) Bogs, Marshes, Swamps, Fens, Peatlands suitable non-breeding
Altitude 0 - 4000 m Occasional altitudinal limits  

Recommended citation
BirdLife International (2019) Species factsheet: Cistothorus platensis. Downloaded from http://www.birdlife.org on 17/11/2019. Recommended citation for factsheets for more than one species: BirdLife International (2019) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 17/11/2019.