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

Wood Thrush Population Trend in Ohio

All statesForest birds

Wood Thrush in Ohio has surged: up 303% on the route-weighted index since 1968.

+303%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 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 303% 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 12% by 2029 — from 15 in 2024 to a central estimate of 17 (95% range 13–20). A 5-year backtest shows a typical error of ±10.3%, with 100% of held-out values landing inside the 95% band.

+12%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 →
17Projected 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 →
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 →
±10.3%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 12% by 2029 — from 15 in 2024 to a central estimate of 17 (95% range 13–20). A 5-year backtest shows a typical error of ±10.3%, 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 →
2025161219
2026161319
2027161320
2028161320
2029171320

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
Zaleski S.F.5520241992
Shawnee S.F.4720001992
Wayne N.F.4620241992
Dresden4420241966
Rome4420241966
South Olive4420241993
Dell4320191993
Tick Ridge4120191993
Scioto Trail3520131992
Pike S.F.3420131992
Keene3320231992
Coal Run3119921966
Bolins Mills3020241966
Pomeroy3020221966
Smithfield2520241966
Ray2520241992
Coshocton2519911990
New Marshfld2420241966
Omega2420241966
Birmingham2420241988
Stonecreek2220241996
Baxter Ridge2120231998
Ash Ridge1920211992
Newcomerstwn1819951966

Wood Thrush Population Trend in Other States

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

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