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Bendire's Thrasher Toxostoma bendirei

IUCN Red List Criteria

Critically Endangered  
Endangered  
Vulnerable A2ce+3ce+4ce 

IUCN Red List history

Year Category
2012 Vulnerable
2008 Vulnerable
2004 Vulnerable
2000 Lower Risk/Least Concern
1994 Lower Risk/Least Concern
1988 Lower Risk/Least Concern

Species attributes

Migratory status full migrant Forest dependency Does not normally occur in forest
Land mass type continent
Average mass 62.2 g

Distribution

  Estimate Data quality
Extent of Occurrence breeding/resident (km2) 823,000 medium
Number of locations -
Fragmentation -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals medium Estimated 2003
Population trend Decreasing medium -
Number of subpopulations - - -
Largest subpopulation - - -
Generation length (yrs) 4.2 - - -
Population justification: Rich et al. (2003).
Trend justification: This species has undergone a large and statistically significant decrease over the last 40 years in North America (-90.6% decline over 40 years, equating to a -44.7% decline per decade; data from Breeding Bird Survey and/or Christmas Bird Count: Butcher and Niven 2007). The BBS trend analyses for the ten-year period from 1993-2002 and the 21-year period 1980-2002 show no significant trends, but this is attributable to the fact that few birds are encountered anymore because they are so rare across the species range (J. Wells, K. Rosenberg and E. Inigo in litt. 2003).

Country/Territory distribution

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

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Desert Temperate major breeding
Desert Temperate major non-breeding
Grassland Subtropical/Tropical Dry suitable breeding
Grassland Subtropical/Tropical Dry suitable non-breeding
Shrubland Subtropical/Tropical Dry major breeding
Shrubland Subtropical/Tropical Dry major non-breeding
Altitude 0 - 1600 m Occasional altitudinal limits  

Threats & impact

Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Annual & perennial non-timber crops / Agro-industry farming Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Livestock farming & ranching / Scale Unknown/Unrecorded Timing Scope Severity Impact
Ongoing Unknown Unknown Unknown
Stresses
Ecosystem degradation, Ecosystem conversion
Biological resource use Logging & wood harvesting / Unintentional effects: (subsistence/small scale) [harvest] Timing Scope Severity Impact
Ongoing Unknown Unknown Unknown
Stresses
Ecosystem degradation
Human intrusions & disturbance Recreational activities Timing Scope Severity Impact
Ongoing Unknown Unknown Unknown
Stresses
Species disturbance
Invasive and other problematic species, genes & diseases Problematic native species/diseases Timing Scope Severity Impact
Ongoing Majority (50-90%) Unknown Unknown
Stresses
Competition
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: Toxostoma bendirei. Downloaded from http://www.birdlife.org on 29/08/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 29/08/2014.

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 Mimidae (Mockingbirds and thrashers)
Species name author (Coues, 1873)
Population size mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 823,000 km2
Country endemic? No
Links to further information
- Summary information on this species