Western Russet Antshrike (Thamnistes anabatinus) | Details

Western Russet Antshrike Thamnistes anabatinus

Current view: Data table and detailed info

Taxonomy

Taxonomic note
Thamnistes anabatinus and T. aequatorialis (del Hoyo and Collar 2016) were previously lumped as T. anabatinus following AOU (1998 and supplements), SACC (2005 and updates), Sibley and Monroe (1990, 1993) and 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
2022	Least Concern
2016	Least Concern
2012	Not Recognised
2008	Not Recognised
2004	Not Recognised
2000	Not Recognised
1994	Not Recognised
1988	Not Recognised

Species attributes

Migratory status	not a migrant	Forest dependency	high
Land-mass type		Average mass	21 g

Range

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	2,340,000 km²	medium
Severely fragmented?	no	-

Population

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	-	-	-
Population trend	decreasing	-	suspected	2016-2026
Rate of change over the past 10 years/3 generations (longer of the two periods)	10-19%	-	-	-
Rate of change over the future 10 years/3 generations (longer of the two periods)	10-19%	-	-	-
Rate of change over the past & future 10 years/3 generations (longer of the two periods)	10-19%	-	-	-
Generation length	3.17 years	-	-	-

Population justification: The global population size is unknown given recent taxonomic splits.

Trend justification: The population trend has not been investigated. Tree cover within the range is lost at a rate of 11% over ten years (Global Forest Watch 2021, using Hansen et al. [2013] data and methods disclosed therein). Even though the species may be found along forest edges and in disturbed habitat it appears to depend on dense forest cover (Greeney et al. 2020). Population declines may therefore be roughly equivalent to the rate of tree cover loss; they are here tentatively placed in the band 10-19% over ten years.

Country/territory distribution

Country/Territory	Presence	Origin	Resident
Belize	extant	native	yes
Colombia	extant	native	yes
Costa Rica	extant	native	yes
Ecuador	extant	native	yes
Guatemala	extant	native	yes
Honduras	extant	native	yes
Mexico	extant	native	yes
Nicaragua	extant	native	yes
Panama	extant	native	yes

Important Bird and Biodiversity Areas (IBA)

Country/Territory	IBA Name

Habitats & altitude

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Subtropical/Tropical Moist Lowland	major	resident
Forest	Subtropical/Tropical Moist Montane	major	resident
Altitude	0 - 400 m	Occasional altitudinal limits	(max) 1700 m

Recommended citation
BirdLife International (2024) Species factsheet: Western Russet Antshrike Thamnistes anabatinus. Downloaded from https://datazone.birdlife.org/species/factsheet/western-russet-antshrike-thamnistes-anabatinus on 22/12/2024.
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 22/12/2024.