Data Zone
Taxonomic note
Ammospiza nelsoni (del Hoyo and Collar 2016) was previously placed in the genus Ammodramus following AOU (1998 & supplements).
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 |
|---|---|---|
| 2021 | Least Concern | |
| 2018 | Least Concern | |
| 2016 | Least Concern | |
| 2012 | Least Concern | |
| 2009 | Least Concern | |
| 2008 | Least Concern | |
| 2004 | Least Concern | |
| 2000 | Lower Risk/Least Concern | |
| 1994 | Not Recognised | |
| 1988 | Not Recognised |
| Migratory status | full migrant | Forest dependency | does not normally occur in forest |
| Land-mass type | Average mass | 17 g |
| Estimate | Data quality | |
|---|---|---|
| Extent of Occurrence (breeding/resident) | 7,890,000 km2 | medium |
| Extent of Occurrence (non-breeding) | 4,670,000 km2 | medium |
| Severely fragmented? | no | - |
| Estimate | Data quality | Derivation | Year of estimate | |
|---|---|---|---|---|
| Population size | 1000000 mature individuals | poor | estimated | 2019 |
| Population trend | increasing | - | estimated | - |
| Rate of change over the past 10 years/3 generations (longer of the two periods) | 33% | - | - | - |
| Generation length | 2.66 years | - | - | - |
Population justification: The global population is estimated to number 1 million mature individuals (Partners in Flight 2019).
Trend justification: The species is increasing rapidly (Pardieck et al. 2018; Partners in Flight 2019; Rosenberg et al. 2019).
| Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
|---|---|---|---|---|---|---|
| Canada | extant | native | yes | |||
| Mexico | extant | vagrant | yes | |||
| USA | extant | native | yes | yes | yes |
| Country/Territory | IBA Name |
|---|
| Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
|---|---|---|---|
| Marine Intertidal | Salt Marshes (Emergent Grasses) | major | non-breeding |
| Wetlands (inland) | Permanent Freshwater Lakes (over 8ha) | major | breeding |
| Wetlands (inland) | Seasonal/Intermittent Freshwater Lakes (over 8ha) | major | breeding |
| Altitude | Occasional altitudinal limits |
Recommended citation
BirdLife International (2024) Species factsheet: Nelson's Sparrow Ammospiza nelsoni. Downloaded from
https://datazone.birdlife.org/species/factsheet/nelsons-sparrow-ammospiza-nelsoni on 22/12/2024.
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 22/12/2024.