BirdAnalyst
Species · Ohio · BBS 2026 Release · 1966–2025

Wood Thrush Population Trend in Ohio

All statesForest birds

Wood Thrush in Ohio has surged: up 288% on the route-weighted index since 1968.

+288%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 →
59YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Wood Thrush 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 →

long arc increasecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Wood Thrush has surged in Ohio: up 288% on the route-weighted index since 1968.

Wood Thrush Population Forecast in Ohio

If the recent trend holds, Wood Thrush in Ohio is projected to rise about 16% by 2030 — from 14 in 2025 to a central estimate of 17 (95% range 13–20). A 5-year backtest shows a typical error of ±8.5%, with 100% of held-out values landing inside the 95% band.

+16%Change by 2030TrendPercent 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 →
17Projected 2030 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
13–2095% 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 →
±8.5%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, Wood Thrush in Ohio is projected to rise about 16% by 2030 — from 14 in 2025 to a central estimate of 17 (95% range 13–20). A 5-year backtest shows a typical error of ±8.5%, with 100% of held-out values landing inside the 95% band.19662030
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 →
2026161219
2027161320
2028161320
2029161320
2030171320

Wood Thrush Survey Routes in Ohio

Routes recording Wood Thrush 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 →
Tar Hollow7620241992
Dresden5320251966
South Olive4720251993
Shawnee S.F.4720001992
Dell4320191993
Stonecreek4320251996
Tick Ridge4120191993
Bolins Mills3820251966
Zaleski S.F.3720251992
Baxter Ridge3520251998
Scioto Trail3520131992
Pike S.F.3420131992
Rome3320251966
Keene3320231992
Coal Run3119921966
Wayne N.F.3120251992
Pomeroy3020221966
New Marshfld2920251966
Coshocton2519911990
Omega2420241966
Birmingham2420241988
Mohican S.F.2120251992
Smithfield1920251966
Ray1920251992
Ash Ridge1920211992

Wood Thrush Population Trend in Other States

alabamaarkansasconnecticutdelawarefloridageorgiaillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourinebraskanew-hampshirenew-jerseynew-yorknorth-carolinaoklahomapennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasvermontvirginiawest-virginiawisconsin

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14.