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

Song Sparrow Population Trend in Ohio

All statesGeneralists

Song Sparrow in Ohio has edged down: down 12% on the route-weighted index since 1968.

-12%Since 1968TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
89Routes In StateSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
58YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Song Sparrow Trends in OhioNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

No notable trend signals for Song Sparrow in Ohio. See the full index history below.

Song Sparrow Population Forecast in Ohio

If the recent trend holds, Song Sparrow in Ohio is projected to stay roughly flat through 2029, near 31 (95% range 21–40). A 5-year backtest shows a typical error of ±6.7%, with 100% of held-out values landing inside the 95% band.

-8%Change by 2029TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
31Projected 2029 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
21–4095% range95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
±6.7%Backtest errorBacktest errorTypical error when we hold out the most recent years, forecast them, and compare to what actually happened. Lower means a more trustworthy projection.Full methodology →
If the recent trend holds, Song Sparrow in Ohio is projected to stay roughly flat through 2029, near 31 (95% range 21–40). A 5-year backtest shows a typical error of ±6.7%, with 100% of held-out values landing inside the 95% band.19662029
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →95% low95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →95% high95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
2025312241
2026312141
2027312141
2028312141
2029312140

Song Sparrow Survey Routes in Ohio

Routes recording Song Sparrow in Ohio.
Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology →
Harveysburg10119961966
Omega7420241966
Bismark7219951967
Lucerne6920241992
Hiram6720211992
Dunlap6619881966
Vickery6520241996
Dresden5920241966
Stonecreek5520241996
Marion 25420242024
Smithfield5020241966
Wilmington5019961966
Darrtown4920211966
Tecumseh4819821966
Marion4720231966
Ashley4720181988
Garrettsvile4619911966
Ash Ridge4620211992
Napoleon4520241966
Newport4519941966
Cumberland4520171966
Lattasburg4320241966
Newcomerstwn4219951966
Hebron4220241966
Fulton4120241966

Song Sparrow Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawaregeorgiaidahoillinoisindianaiowakansaskentuckymainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseeutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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