BirdAnalyst
Species · BCR 9 · BBS 2025 Release · 1966–2024

Grasshopper Sparrow In Great Basin

All regionsGreat BasinGrassland birds

Grasshopper Sparrow in Great Basin has edged up: up 12% on the route-weighted index since 1971.

+12%Since 1971
104Routes In Region
55Years

Notable Signals

No notable trend signals for Grasshopper Sparrow in Great Basin. See the full index history below.

Forecast

If the recent trend holds, Grasshopper Sparrow in Great Basin is projected to rise about 150% by 2029 — from 0.32 in 2024 to a central estimate of 0.80 (95% range 0.22–1.4). A 5-year backtest shows a typical error of ±225%, with 20% of held-out values landing inside the 95% band.

+150%Change by 2029
0.80Projected 2029 index
0.22–1.495% range
±225%Backtest error
19682029
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected index95% low95% high
20250.780.201.4
20260.790.211.4
20270.790.211.4
20280.800.221.4
20290.800.221.4

Routes In Great Basin

Routes recording Grasshopper Sparrow in Great Basin.
HattonWASHINGTON291994
Arid Land ErWASHINGTON291996
EwanWASHINGTON162019
BickletonWASHINGTON122019
Lost RiverIDAHO102024
SpringfieldIDAHO91986
Blacks CreekIDAHO81969
Johnson CanUTAH72024
RichlandWASHINGTON72024
Twin ButtesIDAHO62024
HarringtonWASHINGTON62005
Hanford SiteWASHINGTON61996
WilburWASHINGTON52019
BlitzenOREGON41990
SquirrelIDAHO32024
Blackft ResIDAHO32008
PicaboIDAHO32021
Tractor FlatIDAHO32024
MinervaNEVADA32012
Notch PeakUTAH31992
SnowdenWASHINGTON31986
SulphurWASHINGTON32022
Crowley LakeCALIFORNIA21977
CedarvilleCALIFORNIA21982
BakerIDAHO22002

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.