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Species · Alaska · BBS 2025 Release · 1966–2024

Savannah Sparrow Population Trend in Alaska

All statesGrassland birds

Savannah Sparrow in Alaska has surged: up 365% on the route-weighted index since 1975.

+365%Since 1975
113Routes In State
48Years

Notable Savannah Sparrow Trends in Alaska

long arc increasecomputed index

Savannah Sparrow has surged in Alaska: up 365% on the route-weighted index since 1975.

Savannah Sparrow Population Forecast in Alaska

If the recent trend holds, Savannah Sparrow in Alaska is projected to rise about 25% by 2029 — from 9.7 in 2024 to a central estimate of 12 (95% range 4.7–20). A 5-year backtest shows a typical error of ±32.5%, with 100% of held-out values landing inside the 95% band.

+25%Change by 2029
12Projected 2029 index
4.7–2095% range
±32.5%Backtest error
19712029
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
2025124.519
2026124.619
2027124.619
2028124.720
2029124.720

Savannah Sparrow Survey Routes in Alaska

Routes recording Savannah Sparrow in Alaska.
Happy Valley9720241993
Galbraith L.9320241993
Red Dog8120241995
Toklat5820241982
St. Mary'S5520141993
Wasilla4119831983
Cold Bay (Short)3819921984
Savage3720241986
Kodiak3619841983
Nome3520231993
Cold Bay3420241993
Homer3119821977
Cape Nome3120241993
King Salmon2720241993
Goodnews Bay2720051999
Teller2420241993
Chiniak2120241985
Kodiak 22120241985
Togiak River2020051999
Dillingham (Short)1719841984
Monahan1620211983
Kalifonsky1520231982
Moose Pass1419921983
Maclaren1320241982
Delta1320241995

Savannah Sparrow Population Trend in Other States

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

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