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Saltmarsh Sparrow Ammodramus caudacutus

IUCN Red List Criteria

Critically Endangered  
Endangered  
Vulnerable B2ab(i,ii,iii,iv,v) 

IUCN Red List history

Year Category
2012 Vulnerable
2008 Vulnerable
2004 Vulnerable
2000 Lower Risk/Near Threatened
1994 Not Recognised
1988 Not Recognised

Species attributes

Migratory status full migrant Forest dependency Does not normally occur in forest
Land mass type continent
Average mass -

Distribution

  Estimate Data quality
Extent of Occurrence breeding/resident (km2) 69,500 medium
Extent of Occurrence non-breeding (km2) 133,000 medium
Area of Occupancy breeding/resident (km2) 1,999 medium
Number of locations -
Fragmentation -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals medium Estimated 2009
Population trend Decreasing poor -
Number of subpopulations 2-100 - - -
Largest subpopulation - - -
Generation length (yrs) 3.8 - - -
Population justification: Rough extrapolations from more detailed work in Connecticut suggest a global population of c.30,000 individuals, a significantly lower figure than the 250,000 individuals estimated in 2003.
Trend justification: The population is suspected to have declined owing to habitat destruction caused by urban development. Sea-level rises as a result of climate change also threaten the habitat and are a serious potential threat (Greenlaw and Rising 1994, Sibley 1996, C. Elphick in litt. 2003, Bayard and Elphick 2011).

Country/Territory distribution

Country/Territory Occurrence status Presence Breeding Non-breeding Passage Resident
Canada Vagrant Extant Yes      
USA Native Extant Yes      

Important Bird Areas where this species has triggered the IBA criteria

Country/Territory IBA Name IBA link
USA Barn Island Wildlife Management Area site factsheet
USA Confidential site factsheet
USA Delmarva Bayside Marshes site factsheet
USA Great Bay site factsheet
USA Hammonasset Beach State Park site factsheet
USA Hampton/Seabrook Estuary site factsheet

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Marine Intertidal Salt Marshes (Emergent Grasses) major breeding
Marine Intertidal Salt Marshes (Emergent Grasses) major non-breeding
Altitude 0 - 0 m Occasional altitudinal limits  

Threats & impact

Threat (level 1) Threat (level 2) Impact and Stresses
Climate change & severe weather Habitat shifting & alteration Timing Scope Severity Impact
Future Majority (50-90%) Rapid Declines Low Impact: 5
Stresses
Ecosystem degradation
Climate change & severe weather Storms & flooding Timing Scope Severity Impact
Ongoing Majority (50-90%) Rapid Declines Medium Impact: 7
Stresses
Reduced reproductive success, Species mortality
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Common Reed (Phragmites australis) Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Stresses
Ecosystem degradation
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Smooth Cord Grass (Spartina alterniflora) Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Stresses
Ecosystem degradation
Pollution Agricultural & forestry effluents / Type Unknown/Unrecorded Timing Scope Severity Impact
Ongoing Majority (50-90%) Negligible declines Low Impact: 5
Stresses
Ecosystem degradation
Pollution Industrial & military effluents / Type Unknown/Unrecorded Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Stresses
Ecosystem degradation
Residential & commercial development Housing & urban areas Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion

Recommended citation
BirdLife International (2014) Species factsheet: Ammodramus caudacutus. Downloaded from http://www.birdlife.org on 26/11/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 26/11/2014.

This information is based upon, and updates, the information published in BirdLife International (2000) Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004) Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.

To provide new information to update this factsheet or to correct any errors, please email BirdLife

To contribute to discussions on the evaluation of the IUCN Red List status of Globally Threatened Birds, please visit BirdLife's Globally Threatened Bird Forums.

Key facts
Current IUCN Red List category Vulnerable
Family Emberizidae (Buntings, American sparrows and allies)
Species name author (Gmelin, 1788)
Population size mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 69,500 km2
Country endemic? Yes
Links to further information
- Summary information on this species