Winter Wren (Troglodytes hiemalis) - BirdLife species factsheet

Winter Wren Troglodytes hiemalis

Current view: Data table and detailed info

Taxonomy

Taxonomic note

Troglodytes troglodytes, T. pacificus and T. hiemalis (del Hoyo and Collar 2016) were previously lumped as T. troglodytes following AERC TAC (2003), AOU (1998 & supplements), Cramp et al. (1977-1994), Sibley & 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
2021	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	full migrant	Forest dependency	medium
Land-mass type		Average mass	9 g

Range

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	7,210,000 km²	medium
Extent of Occurrence (non-breeding)	4,360,000 km²	medium
Severely fragmented?	no	-

Population

	Estimate	Data quality	Derivation	Year of estimate
Population size	11000000 mature individuals	poor	estimated	2019
Population trend	increasing	-	inferred	-
Generation length	1.72 years	-	-	-

Population justification: The global population is estimated 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 1% per year between 1970 and 2017 (Partners in Flight 2019; Rosenberg et al. 2019). Trends however vary locally, with some populations in the northern and eastern part of the range increasing, while populations in the south are declining (Meehan et al. 2018).

Country/territory distribution

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Canada	extant	native		yes	yes	yes
Mexico	extant	native			yes
St Pierre and Miquelon (to France)	extant	native		yes
USA	extant	native	yes	yes	yes	yes

Important Bird and Biodiversity Areas (IBA)

Country/Territory	IBA Name

Habitats & altitude

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Artificial/Terrestrial	Rural Gardens	suitable	breeding
Artificial/Terrestrial	Rural Gardens	suitable	non-breeding
Artificial/Terrestrial	Urban Areas	suitable	breeding
Artificial/Terrestrial	Urban Areas	suitable	non-breeding
Forest	Boreal	major	breeding
Forest	Subtropical/Tropical Moist Lowland	suitable	breeding
Forest	Subtropical/Tropical Moist Lowland	suitable	non-breeding
Forest	Temperate	major	breeding
Forest	Temperate	major	non-breeding
Shrubland	Boreal	suitable	breeding
Shrubland	Boreal	suitable	non-breeding
Shrubland	Temperate	suitable	breeding
Shrubland	Temperate	suitable	non-breeding
Altitude		Occasional altitudinal limits

Utilisation

Purpose	Scale
Food - human	subsistence, national
Pets/display animals, horticulture	international

Recommended citation
BirdLife International (2024) Species factsheet: Winter Wren Troglodytes hiemalis. Downloaded from https://datazone.birdlife.org/species/factsheet/winter-wren-troglodytes-hiemalis on 22/11/2024.
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 22/11/2024.