LC
Winter Wren Troglodytes hiemalis



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
2016 Least Concern
Species attributes

Migratory status full migrant Forest dependency Medium
Land mass type Average mass 8.899999619 g
Extent of occurrence (EOO)

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 7,210,000 medium
Extent of Occurrence non-breeding (km2) 4,360,000 medium
Number of locations -
Fragmentation -
Population and trend
Estimate Data quality Derivation Year of estimate
No. of mature individuals poor estimated 2009
Population trend Unknown 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 since the species was split.


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Canada N Extant Yes
Mexico N Extant Yes
USA 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 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 non-breeding
Forest Subtropical/Tropical Moist Lowland suitable 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 Primary form used Life stage used Source Scale Level Timing
Pets/display animals, horticulture - - International Non-trivial Recent

Recommended citation
BirdLife International (2019) Species factsheet: Troglodytes hiemalis. Downloaded from http://www.birdlife.org on 25/03/2019. Recommended citation for factsheets for more than one species: BirdLife International (2019) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 25/03/2019.