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.
Critically Endangered | Endangered | Vulnerable |
---|---|---|
- | - | - |
Year | Category | Criteria |
---|---|---|
2020 | Near Threatened | A2abc+3bc+4abc |
2018 | Near Threatened | A2ac+3c+4ac |
2016 | Near Threatened | A2c |
2012 | Near Threatened | A2c |
2008 | Near Threatened | A2c |
2004 | Near Threatened | |
2000 | Lower Risk/Near Threatened | |
1994 | Lower Risk/Least Concern | |
1988 | Lower Risk/Least Concern |
Migratory status | not a migrant | Forest dependency | medium |
Land-mass type |
continent |
Average mass | 19 g |
Estimate | Data quality | |
---|---|---|
Extent of Occurrence (breeding/resident) | 1,650,000 km2 | medium |
Extent of Occurrence (non-breeding) | 1,150,000 km2 | medium |
Severely fragmented? | no | - |
Estimate | Data quality | Derivation | Year of estimate | |
---|---|---|---|---|
Population size | 170000 mature individuals | medium | estimated | 2019 |
Population trend | decreasing | medium | estimated | 2014-2024 |
Rate of change over the past 10 years/3 generations (longer of the two periods) | 20-29% | - | - | - |
Rate of change over the future 10 years/3 generations (longer of the two periods) | 20-29% | - | - | - |
Rate of change over the past & future 10 years/3 generations (longer of the two periods) | 20-29% | - | - | - |
Generation length | 2.19 years | - | - | - |
Population justification: Partners in Flight (2019) estimate the population size at 170,000 mature individuals.
Trend justification: Data from the Breeding Bird Survey suggests that between 2010-2015, the species underwent an ~2.52% annual decline, which equates to a ~22.5% decline across the stipulated ten year period (Sauer et al. 2017). Similarly, the Christmas Bird Count (between 1966 and 2017) suggests annual declines of a comparable magnitude, ~2.61% per year, which equates to a ~23.2% decline across the ten year period (Meehan et al. 2018). Finally, Partners in Flight (2019) have given the species a half-life of ~24 years, which equates to an annual decline of ~3.1%, or ~26.8% decline over the next ten years. Given all such calculations. the rate of decline is placed in the range 20-29%.
Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
---|---|---|---|---|---|---|
USA | extant | native | yes |
Country/Territory | IBA Name |
---|---|
USA | Babcock-Webb Ecosystem |
USA | Fort Chaffee |
USA | Ichetucknee Springs State Park |
USA | Kissimmee Prairie Preserve and State Park |
USA | Myakka River Watershed |
USA | Sandhills West |
USA | Shortleaf Pine-Bluestem Grass Ecosystem Management Area |
USA | Wekiwa Basin GEOPark |
Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
---|---|---|---|
Forest | Subtropical/Tropical Dry | major | resident |
Forest | Temperate | major | resident |
Shrubland | Temperate | suitable | resident |
Altitude | 0 - 900 m | Occasional altitudinal limits |
Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
---|---|---|---|---|---|---|---|---|---|
Biological resource use | Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest] | Timing | Scope | Severity | Impact | ||||
Ongoing | Majority (50-90%) | Slow, Significant Declines | Medium Impact: 6 | ||||||
|
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Human intrusions & disturbance | Recreational activities | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | No decline | Low Impact: 4 | ||||||
|
|||||||||
Natural system modifications | Fire & fire suppression - Supression in fire frequency/intensity | Timing | Scope | Severity | Impact | ||||
Ongoing | Majority (50-90%) | Negligible declines | Low Impact: 5 | ||||||
|
|||||||||
Residential & commercial development | Housing & urban areas | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
|||||||||
Transportation & service corridors | Utility & service lines | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Negligible declines | Low Impact: 4 | ||||||
|
Purpose | Scale |
---|---|
Pets/display animals, horticulture | international |
Recommended citation
BirdLife International (2024) Species factsheet: Bachman's Sparrow Peucaea aestivalis. Downloaded from
https://datazone.birdlife.org/species/factsheet/bachmans-sparrow-peucaea-aestivalis on 24/12/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from
https://datazone.birdlife.org/species/search on 24/12/2024.