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Species · Montana · BBS 2025 Release · 1966–2024

Savannah Sparrow Population Trend in Montana

All statesGrassland birds

Savannah Sparrow in Montana has surged: up 313% on the route-weighted index since 1970.

+313%Since 1970
98Routes In State
56Years

Notable Savannah Sparrow Trends in Montana

long arc increasecomputed index

Savannah Sparrow has surged in Montana: up 313% on the route-weighted index since 1970.

Savannah Sparrow Population Forecast in Montana

If the recent trend holds, Savannah Sparrow in Montana is projected to rise about 21% by 2029 — from 13 in 2024 to a central estimate of 16 (95% range 10–22). A 5-year backtest shows a typical error of ±33.3%, with 80% of held-out values landing inside the 95% band.

+21%Change by 2029
16Projected 2029 index
10–2295% range
±33.3%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
2025169.721
2026169.921
2027161022
2028161022
2029161022

Savannah Sparrow Survey Routes in Montana

Routes recording Savannah Sparrow in Montana.
Beaverhead12520241973
Pablo Res.11320241995
Sunburst7920071971
Two Dot6820241976
Augusta6020241976
Chestnut6020241968
Raynesford5120242016
Red Rock4520241975
Westby4520242015
St Mary4420081968
Church Hill4020242017
Redstone3520241968
Willow Creek 23220241982
Clyde Park3220242018
Hay Lake2920221988
Shelby2920242015
Polson2820241972
St. Mary 22820242009
Twin Bridges2419761968
Whitlash2420242009
Lambert2320242021
Virgelle2220241979
Gildford2220242015
Freeman Creek2120162015
Fort Logan2120242018

Savannah Sparrow Population Trend in Other States

alaskaarizonacaliforniacoloradoconnecticutdelawareidahoillinoisindianaiowakansaskentuckymainemarylandmassachusettsmichiganminnesotamissourinebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooregonpennsylvaniarhode-islandsouth-dakotatennesseeutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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