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

Taxonomic note

Passerculus sandwichensis, P. guttatus, P. sanctorum and P. rostratus (del Hoyo and Collar 2016) were previously lumped as P. sandwichensis following AERC TAC (2003); AOU (1998 & supplements).

 

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
2020	Near Threatened	D2
2016	Near Threatened	D2
2012	Not Recognised
2008	Not Recognised
2004	Not Recognised
2000	Not Recognised
1994	Not Recognised
1988	Not Recognised

Migratory status	not a migrant	Forest dependency	does not normally occur in forest
Land-mass type		Average mass	26 g

	Estimate	Data quality
Extent of Occurrence (breeding/resident)	16 km2	medium
Severely fragmented?	no	-

	Estimate	Data quality	Derivation	Year of estimate
Population size	unknown	-	-	-
Population trend	stable	-	estimated	-
Generation length	2.23 years	-	-	-

Population justification: Population numbers are not known.

Trend justification: The population is tentatively assessed as stable.

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

Country/Territory	IBA Name

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Marine Intertidal	Sandy Shoreline and/or Beaches, Sand Bars, Spits, Etc	major	breeding
Marine Intertidal	Sandy Shoreline and/or Beaches, Sand Bars, Spits, Etc	major	non-breeding
Marine Intertidal	Shingle and/or Pebble Shoreline and/or Beaches	suitable	breeding
Marine Intertidal	Shingle and/or Pebble Shoreline and/or Beaches	suitable	non-breeding
Shrubland	Subtropical/Tropical Dry	major	breeding
Shrubland	Subtropical/Tropical Dry	major	non-breeding
Altitude	0 - 4000 m	Occasional altitudinal limits

Threat (level 1)	Threat (level 2)	Impact and Stresses
Invasive and other problematic species, genes & diseases	Invasive non-native/alien species/diseases - Peromyscus eremicus	Timing		Scope		Severity		Impact
		Future		Majority (50-90%)		Unknown		Unknown
		Stresses Reduced reproductive success, Species mortality

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Recommended citation
BirdLife International (2024) Species factsheet: San Benito Sparrow Passerculus sanctorum. Downloaded from https://datazone.birdlife.org/species/factsheet/san-benito-sparrow-passerculus-sanctorum on 27/11/2024.
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 27/11/2024.