LC
Savannah Sparrow Passerculus sandwichensis



Taxonomy

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.

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
Species attributes

Migratory status full migrant Forest dependency Does not normally occur in forest
Land mass type Average mass 26 g
Distribution

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 33,700,000 medium
Extent of Occurrence non-breeding (km2) 13,400,000 medium
Number of locations -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals 170000000 poor suspected 2019
Population trend Decreasing suspected -
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 - - -
Percentage in largest subpopulation - - -

Population justification: The global population is suspected to number fewer than 170 million mature individuals (Partners in Flight 2019).

Trend justification: The species is undergoing a moderate decline (Partners in Flight 2019). The rate of the decline has not been assessed; together with the recently split San Benito Sparrow (Passerculus sanctorum), Belding's Sparrow (P. guttatus) and Large-billed Sparrow (P. rostratus), the decline amounted to an average rate of 1.3% per year between 1970 and 2017 (Partners in Flight 2019). Short-term trends suggest a moderate decline of 18% over the past ten years (Pardieck et al. 2018). As Savannah Sparrow occupies a much larger range than the recently split species, it is conceivable that it accounts for a large proportion of the observed decline. Thus, the species is tentatively considered to be in decline, but the rate of decline is not considered to approach the threshold for Vulnerable over the relevant three generation time periods for this assessment.


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Bahamas N Extant Yes
Belize N Extant Yes
Bermuda (to UK) V Extant
Canada N Extant Yes
Cayman Islands (to UK) N Extant Yes
Cuba N Extant Yes
El Salvador V Extant Yes
Japan V Extant
Mexico N Extant Yes Yes
Portugal V Extant
Russia N Extant
Russia (Asian) V Extant
South Korea V Extant
St Pierre and Miquelon (to France) N Extant Yes
United Kingdom V Extant
USA N Extant Yes Yes Yes Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Canada Sable Island, Nova Scotia
Canada Twin Islands
Canada Carden Plain
Canada Big Piskwanish Point

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Arable Land suitable breeding
Artificial/Terrestrial Arable Land suitable non-breeding
Artificial/Terrestrial Pastureland suitable breeding
Artificial/Terrestrial Pastureland suitable non-breeding
Grassland Subtropical/Tropical Dry suitable breeding
Grassland Subtropical/Tropical Dry suitable non-breeding
Grassland Temperate suitable breeding
Grassland Temperate suitable non-breeding
Grassland Tundra suitable breeding
Grassland Tundra suitable non-breeding
Marine Coastal/Supratidal Coastal Sand Dunes suitable breeding
Marine Coastal/Supratidal Coastal Sand Dunes suitable non-breeding
Marine Coastal/Supratidal Sea Cliffs and Rocky Offshore Islands major breeding
Marine Intertidal Salt Marshes (Emergent Grasses) suitable breeding
Marine Intertidal Salt Marshes (Emergent Grasses) suitable non-breeding
Marine Intertidal Sandy Shoreline and/or Beaches, Sand Bars, Spits, Etc suitable breeding
Marine Intertidal Sandy Shoreline and/or Beaches, Sand Bars, Spits, Etc suitable 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 suitable breeding
Shrubland Subtropical/Tropical Dry suitable non-breeding
Shrubland Temperate suitable breeding
Shrubland Temperate suitable non-breeding
Wetlands (inland) Bogs, Marshes, Swamps, Fens, Peatlands suitable breeding
Wetlands (inland) Bogs, Marshes, Swamps, Fens, Peatlands suitable non-breeding
Altitude 0 - 4000 m Occasional altitudinal limits  

Recommended citation
BirdLife International (2022) Species factsheet: Passerculus sandwichensis. Downloaded from http://www.birdlife.org on 14/08/2022. Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 14/08/2022.