BirdAnalyst
Species · Utah · BBS 2025 Release · 1966–2024

Grasshopper Sparrow Population Trend in Utah

All statesGrassland birds

Grasshopper Sparrow in Utah has fallen sharply: down 62% on the route-weighted index since 1988.

-62%Since 1988
20Routes In State
36Years

Notable Grasshopper Sparrow Trends in Utah

long arc declinecomputed index

Grasshopper Sparrow has fallen sharply in Utah: down 62% on the route-weighted index since 1988.

Grasshopper Sparrow Population Forecast in Utah

If the recent trend holds, Grasshopper Sparrow in Utah is projected to fall about 100% by 2029 — from 0.15 in 2024 to a central estimate of 0.00 (95% range 0.00–0.45). A 5-year backtest shows a typical error of ±62.3%, with 100% of held-out values landing inside the 95% band.

-100%Change by 2029
0.00Projected 2029 index
0.00–0.4595% range
±62.3%Backtest error
19742029
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
20250.040.000.48
20260.030.000.47
20270.020.000.47
20280.010.000.46
20290.000.000.45

Grasshopper Sparrow Survey Routes in Utah

Routes recording Grasshopper Sparrow in Utah.
Altonah5219931993
Johnson Can720241987
Notch Peak319921992
Promontory220241974
Snowville220231999
Kamas219981998
Vernal220181999
Gold Hill220011996
Neponset Res120122002
Saleratus Cr120092000
E. Bear Lake120221997
Lynn120101994
Randolph120082008
Grouse Creek120102010
Vernon120182016
Bear River120152015
Indian Peak119951995
Alton119971997
Heber Mtn.120121998
Jensen120221992

Grasshopper Sparrow Population Trend in Other States

alabamaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniasouth-carolinasouth-dakotatennesseetexasvermontvirginiawashingtonwest-virginiawisconsinwyoming

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