Riverside Wren (Cantorchilus semibadius) - BirdLife species factsheet

Riverside Wren Cantorchilus semibadius

Current view: Data table and detailed info

Taxonomy

Taxonomic note
Cantorchilus semibadius (del Hoyo and Collar 2016) was previously listed as Thryothorus semibadius.

Taxonomic source(s)
AOU. 1998. Check-list of North American birds. American Ornithologists' Union, Washington, D.C.
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.
Sibley, C. G.; Monroe, B. L. 1990. Distribution and taxonomy of birds of the world. Yale University Press, New Haven, USA.
Stotz, D. F.; Fitzpatrick, J. W.; Parker, T. A.; Moskovits, D. K. 1996. Neotropical birds: ecology and conservation. University of Chicago Press, Chicago.

IUCN Red list criteria met and history

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	-	-

Red List history

Year	Category	Criteria
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

Species attributes

Migratory status	not a migrant	Forest dependency	Medium
Land mass type		Average mass	-

Extent of occurrence (EOO)

	Estimate	Data quality
Extent of Occurrence breeding/resident (km2)	21,400	medium
Number of locations		-
Fragmentation		-

Population and trend

	Estimate	Data quality	Derivation	Year of estimate
No. of mature individuals	unknown	not applicable	not applicable	0
Population trend	Unknown		not applicable	-
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)	3.9	-	-	-

Population justification: The global population size has not been quantified, but this species is described as 'uncommon and patchily distributed' (Stotz et al. 1996).

Trend justification: The population trend is difficult to determine because of uncertainty over the impacts of habitat modification on population sizes.

Country/territory distribution

Country/Territory	Occurrence status	Presence	Resident	Breeding	Non-breeding	Passage
Costa Rica	N	Extant	Yes
Panama	N	Extant	Yes

Important Bird and Biodiversity Areas (IBA)

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

Habitats & altitude

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Lowland	major	resident
Forest	Subtropical/Tropical Swamp	suitable	resident
Wetlands (inland)	Permanent Rivers/Streams/Creeks (includes waterfalls)	suitable	resident
Altitude	0 - 1200 m	Occasional altitudinal limits

Recommended citation
BirdLife International (2018) Species factsheet: Cantorchilus semibadius. Downloaded from http://www.birdlife.org on 21/09/2018. Recommended citation for factsheets for more than one species: BirdLife International (2018) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 21/09/2018.