NT
Harris's Sparrow Zonotrichia querula



Taxonomy

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
2020 Near Threatened A2ac+3c+4ac
2018 Near Threatened A2ac+3c+4ac
2016 Least Concern
2012 Least Concern
2009 Least Concern
2008 Least Concern
2004 Least Concern
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 Average mass -
Distribution

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 2,820,000 medium
Extent of Occurrence non-breeding (km2) 1,420,000 medium
Number of locations -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals 2000000 poor estimated 2019
Population trend Decreasing 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) 20-29 - - -
Decline (10 years/3 generation past and future) 20-29 - - -
Number of subpopulations - - -
Percentage in largest subpopulation - - -

Population justification: Partners in Flight (2019) estimate the population size to be 2,000,000 mature individuals.

Trend justification: Partners in Flight (2019) estimate an annual population reduction of -1.9%, which equates to a ~17.6% reduction across the stipulated ten year period. The Christmas Bird Count further suggests an annual decline of 1.95%, or a ~17.9% decline over ten years (Meehan et al. 2018). Rosenberg et al. (2016) also suggest a ~2.2% annual rate of decline between 1970 and 2014, equable to a ~20.2% decline across a ten year period. Some estimates have however, placed the rate of decline in Canadian populations considerably higher (Meehan et al. 2018) and as such, the rate of decline here is placed in the band 20-29%.


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

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Arable Land marginal non-breeding
Artificial/Terrestrial Pastureland marginal non-breeding
Artificial/Terrestrial Rural Gardens suitable non-breeding
Forest Boreal major breeding
Grassland Temperate suitable non-breeding
Grassland Temperate suitable breeding
Grassland Tundra suitable non-breeding
Grassland Tundra suitable breeding
Shrubland Boreal suitable non-breeding
Shrubland Boreal suitable breeding
Shrubland Temperate suitable non-breeding
Shrubland Temperate suitable breeding
Altitude   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 Declines Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion
Climate change & severe weather Habitat shifting & alteration Timing Scope Severity Impact
Future Whole (>90%) Unknown Unknown
Stresses
Indirect ecosystem effects, Ecosystem degradation
Natural system modifications Fire & fire suppression - Increase in fire frequency/intensity Timing Scope Severity Impact
Ongoing Minority (<50%) Unknown Unknown
Stresses
Indirect ecosystem effects, Ecosystem degradation, Ecosystem conversion
Residential & commercial development Housing & urban areas Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion

Recommended citation
BirdLife International (2021) Species factsheet: Zonotrichia querula. Downloaded from http://www.birdlife.org on 16/10/2021. Recommended citation for factsheets for more than one species: BirdLife International (2021) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 16/10/2021.