Wrentit (Chamaea fasciata) - BirdLife species factsheet

Wrentit Chamaea fasciata

Current view: Data table and detailed info

Taxonomy

Taxonomic note
Chamaea has been moved from the family Sylviidae to Paradoxornithidae following Cai et al. (2019). Additional proposed subspecies include intermedia (from interior and S areas of San Francisco Bay region of California), synonymized with rufula, and canicauda (from NW Baja California), treated as synonym of henshawi. Five subspecies recognized.

Taxonomic source(s)
Handbook of the Birds of the World and BirdLife International. 2021. Handbook of the Birds of the World and BirdLife International digital checklist of the birds of the world. Version 6. Available at: https://datazone.birdlife.org/userfiles/file/Species/Taxonomy/HBW-BirdLife_Checklist_v6_Dec21.zip.

IUCN Red List criteria met and history

Red List criteria met

Critically Endangered	Endangered	Vulnerable
-	-	-

Red List history

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

Species attributes

Migratory status	not a migrant	Forest dependency	does not normally occur in forest
Land-mass type		Average mass	-

Range

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	504,000 km²	medium
Severely fragmented?	no	-

Population

	Estimate	Data quality	Derivation	Year of estimate
Population size	2200000 mature individuals	poor	estimated	2019
Population trend	decreasing	-	estimated	-
Rate of change over the past 10 years/3 generations (longer of the two periods)	7%	-	-	-
Generation length	2.61 years	-	-	-

Population justification: The global population is estimated to number 2.2 million mature individuals (Partners in Flight 2019).

Trend justification: The species has been undergoing a moderate decline at an average rate of 0.73% per year between 1970 and 2017 (Partners in Flight 2019; Rosenberg et al. 2019). Short-term trends suggest that the population in North America has declined by 7% over the past ten years (Pardieck et al. 2018).

Country/territory distribution

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Mexico	extant	native	yes
USA	extant	native	yes

Important Bird and Biodiversity Areas (IBA)

Country/Territory	IBA Name

Habitats & altitude

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Shrubland	Subtropical/Tropical Dry	major	resident
Shrubland	Subtropical/Tropical High Altitude	suitable	resident
Altitude	0 - 2600 m	Occasional altitudinal limits

Recommended citation
BirdLife International (2024) Species factsheet: Wrentit Chamaea fasciata. Downloaded from https://datazone.birdlife.org/species/factsheet/wrentit-chamaea-fasciata on 25/11/2024.
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 25/11/2024.