• Summary
• Text account
• Data table and detailed info
• Distribution map
• Reference and further resources

Taxonomic note

Passerella iliaca, P. unalaschcensis, P. schistacea and P. megarhyncha (del Hoyo and Collar 2016) were previously lumped as P. iliaca following AERC TAC (2003); AOU (1998 & supplements); Cramp et al. (1977-1994); Sibley & Monroe (1990, 1993); 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.

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

Migratory status	full migrant	Forest dependency	medium
Land-mass type		Average mass	33 g

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	10,300,000 km2	medium
Extent of Occurrence (non-breeding)	3,530,000 km2	medium
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	poor	-	-
Population trend	decreasing	-	suspected	-
Generation length	2.86 years	-	-	-

Population justification: The global population size is unknown given recent taxonomic splits, but it is assumed to be very large (see Partners in Flight 2019).

Trend justification: The population trend is difficult to determine because of uncertainty over the impacts of habitat modification on population sizes. It is here precautionarily suspected that the species is declining slowly (see Meehan et al. 2018; Pardieck et al. 2018; Partners in Flight 2019).

Country/Territory	Presence	Origin	Resident	Breeding visitor	Non-breeding visitor	Passage migrant
Bermuda (to UK)	extant	vagrant
Canada	extant	native		yes		yes
Germany	extant	vagrant
Greenland (to Denmark)	extant	vagrant
Iceland	extant	vagrant
Ireland	extant	vagrant
Italy	extant	vagrant
Mexico	extant	vagrant			yes
Russia	extant	native		yes
Russia (Asian)	extant	vagrant		yes
St Pierre and Miquelon (to France)	extant	native		yes
USA	extant	native			yes	yes

Country/Territory	IBA Name

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Forest	Boreal	suitable	breeding
Forest	Boreal	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

Purpose	Scale
Pets/display animals, horticulture	international

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Recommended citation
BirdLife International (2024) Species factsheet: Red Fox-sparrow Passerella iliaca. Downloaded from https://datazone.birdlife.org/species/factsheet/red-fox-sparrow-passerella-iliaca 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.