• Summary
• Text account
• Data table and detailed info
• Distribution map
• Reference and further resources

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.
SACC. 2005 and updates. A classification of the bird species of South America. Available at: https://www.museum.lsu.edu/~Remsen/SACCBaseline.htm.

Population justification: The global population is inferred to number 34 million mature individuals (Partners in Flight 2019).

Trend justification: The species has been undergoing a large decline at an average rate of 2.5% per year between 1970 and 2017 (Partners in Flight 2019). Declines appear to be slowing down however; in North America, which holds almost the entire global population, the species declined by 23% over the past ten years (Pardieck et al. 2018). Furthermore, the future half-life of the species is estimated at 51 years (Partners in Flight 2019), which would equate to a decline of 13% over the next ten years. Data from the Christmas Bird Count report a much lower rate of decline of -0.32% per year (Meehan et al. 2018), equating to 3% over ten years. In view of this uncertaintly, the species is tentatively assessed as declining at a rate not approaching the threshold for Vulnerable over the relevant three generation period for this assessment.

Recommended citation
BirdLife International (2024) Species factsheet: Grasshopper Sparrow Ammodramus savannarum. Downloaded from https://datazone.birdlife.org/species/factsheet/grasshopper-sparrow-ammodramus-savannarum on 23/12/2024.
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 23/12/2024.