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CR(PE)
Bachman's Warbler Vermivora bachmanii

IUCN Red List Criteria

Critically Endangered
Endangered D1+2 
Vulnerable

IUCN Red List history

Year Category
2013 Critically Endangered
2012 Critically Endangered
2009 Critically Endangered
2008 Critically Endangered
2004 Critically Endangered
2000 Critically Endangered
1994 Critically Endangered
1988 Threatened

Species attributes

Migratory status full migrant Forest dependency Medium
Land mass type continent
Average mass -

Distribution

  Estimate Data quality
Extent of Occurrence breeding/resident (km2) 1 medium
Number of locations -
Fragmentation -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals 1-49 poor Estimated 2000
Population trend Unknown -
Number of subpopulations 1 - - -
Largest subpopulation - - -
Generation length (yrs) 3.8 - - -
Population justification: Any remaining population is assumed to be tiny (numbering fewer than 50 individuals and mature individuals), with the last (unconfirmed) sighting in 1988.

Country/Territory distribution

Country/Territory Occurrence status Presence Breeding Non-breeding Passage Resident
Bahamas Vagrant Extinct        
Cuba Native Possibly Extinct   Yes    
USA Native Possibly Extinct Yes      

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Dry suitable non-breeding
Forest Subtropical/Tropical Swamp major breeding
Shrubland Subtropical/Tropical Moist suitable non-breeding
Altitude 0 - 0 m Occasional altitudinal limits  

Threats & impact

Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Annual & perennial non-timber crops / Scale Unknown/Unrecorded Timing Scope Severity Impact
Ongoing Majority (50-90%) Unknown Unknown
Stresses
Ecosystem degradation, Ecosystem conversion
Natural system modifications Dams & water management/use / Abstraction of surface water (unknown use) Timing Scope Severity Impact
Ongoing Whole (>90%) Unknown Unknown
Stresses
Ecosystem degradation, Ecosystem conversion

Recommended citation
BirdLife International (2014) Species factsheet: Vermivora bachmanii. Downloaded from http://www.birdlife.org on 22/09/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 22/09/2014.

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 Critically Endangered - Possibly Extinct
Family Parulidae (New World warblers)
Species name author (Audubon, 1833)
Population size 1-49 mature individuals
Population trend Unknown
Distribution size (breeding/resident) 1 km2
Country endemic? No
Links to further information
- Summary information on this species