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Species · Tennessee · BBS 2026 Release · 1966–2025

Wood Thrush Population Trend in Tennessee

All statesForest birds

Wood Thrush in Tennessee has held roughly steady: up 2% on the route-weighted index since 1968.

+2%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 →
55Routes 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 TennesseeNotable 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 Wood Thrush in Tennessee. See the full index history below.

Wood Thrush Population Forecast in Tennessee

If the recent trend holds, Wood Thrush in Tennessee is projected to fall about 31% by 2030 — from 9.3 in 2025 to a central estimate of 6.4 (95% range 3.8–9.1). A 5-year backtest shows a typical error of ±28.5%, with 40% of held-out values landing inside the 95% band.

-31%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 →
6.4Projected 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 →
3.8–9.195% 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 →
±28.5%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 Tennessee is projected to fall about 31% by 2030 — from 9.3 in 2025 to a central estimate of 6.4 (95% range 3.8–9.1). A 5-year backtest shows a typical error of ±28.5%, with 40% 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 →
20266.64.09.2
20276.53.99.2
20286.53.99.1
20296.53.89.1
20306.43.89.1

Wood Thrush Survey Routes in Tennessee

Routes recording Wood Thrush in Tennessee.
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 →
Big Sandy3320251966
Fish Springs3320231966
Trace Collinwood2920182015
Pond Creek2020251966
Collinwood2020251966
Indian Mound1919981966
Mansfield1820251966
Indian Mound 21820232004
Smokey Jct1720221966
Moscow1620251968
Oliver Spgs1620221966
Wrigley1520221966
Lewis Forest1520251966
Sweetlips1420231966
Trace Lewis1420172013
Jasper1320251967
Tellico1320251995
Red Bank1219781966
Silerton1120241967
Elk Valley1020251970
Mcfarland919931967
Silver Pt820241966
Soddy819811967
Walland819891966
Harbuck720231994

Wood Thrush Population Trend in Other States

alabamaarkansasconnecticutdelawarefloridageorgiaillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourinebraskanew-hampshirenew-jerseynew-yorknorth-carolinaohiooklahomapennsylvaniarhode-islandsouth-carolinasouth-dakotatexasvermontvirginiawest-virginiawisconsin

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