Cassin's Finch Haemorhous cassinii


Taxonomic note

Haemorhous cassinii (del Hoyo and Collar 2016) was previously placed in the genus Carpodacus following AOU (1998 & supplements); Sibley & Monroe (1990, 1993); Stotz et al. (1996).

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
2019 Least Concern
2016 Near Threatened A2bc+3bc+4bc
2012 Near Threatened A2bc+3bc+4bc
2008 Near Threatened A2b,c; A3b,c; A4b,c
2004 Near Threatened
2000 Lower Risk/Least Concern
1994 Lower Risk/Least Concern
1988 Lower Risk/Least Concern
Species attributes

Migratory status full migrant Forest dependency Medium
Land mass type Land-mass type - continent
Average mass 26 g

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 2,730,000 medium
Extent of Occurrence non-breeding (km2) 3,600,000 medium
Number of locations -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals 3000000 medium estimated 2016
Population trend Decreasing medium estimated -
Decline (3 years/1 generation past) - - -
Decline (5 years/1 generation past) - - -
Decline (10 years/1 generation past) - - -
Decline (10 years/3 generation future) 1-19 - - -
Decline (10 years/3 generation past and future) 1-19 - - -
Number of subpopulations - - -
Percentage in largest subpopulation - - -
Generation length (yrs) 4 - - -

Population justification: Partners in Flight estimate the global population to number 3 million mature individuals (A. Panjabi in litt. 2017).

Trend justification: This species has undergone a significant decline over the last decades in North America (69% decline between 1974 and 2014 based on Partners in Flight, A. Panjabi in litt. 2017). Recent information the North American Breeding Bird Survey only shows non-significant declines in this species, which would not approach the threshold for listing as Vulnerable (Sauer et al. 2017). Using data from 2006 (three generations ago) to 2015 gives an annual decline of 0.56% (2.24% decline to 1.36% increase). Extrapolating these trends forwards would give an overall population reduction of 6.52% (23.80% reduction to 17.60% increase) over the next three generations. Population reductions have been occurring at this approximate rate for some time now (at least 5 years).

Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Canada N Extant Yes Yes
Mexico N Extant Yes
USA N Extant Yes Yes Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Canada Chilcotin Junction
Mexico Sierra de San Pedro Mártir
Mexico Sierra del Burro

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Urban Areas suitable non-breeding
Forest Boreal major breeding
Forest Boreal major non-breeding
Forest Temperate major breeding
Forest Temperate major non-breeding
Altitude 1000 - 3000 m Occasional altitudinal limits  

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Biological resource use Logging & wood harvesting - Unintentional effects: (large scale) [harvest] Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
Ecosystem degradation, Ecosystem conversion
Climate change & severe weather Droughts Timing Scope Severity Impact
Future Majority (50-90%) Unknown Unknown
Ecosystem degradation, Ecosystem conversion
Invasive and other problematic species, genes & diseases Problematic species/disease of unknown origin - Unspecified species Timing Scope Severity Impact
Future Minority (<50%) Causing/Could cause fluctuations Low Impact: 3
Species mortality
Natural system modifications Fire & fire suppression - Increase in fire frequency/intensity Timing Scope Severity Impact
Future Minority (<50%) Causing/Could cause fluctuations Low Impact: 3
Ecosystem degradation, Species mortality

Recommended citation
BirdLife International (2022) Species factsheet: Haemorhous cassinii. Downloaded from on 28/06/2022. Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from on 28/06/2022.