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Species · Tennessee · BBS 2026 Release · 1966–2025

Eastern Towhee Population Trend in Tennessee

All statesForest birds

Eastern Towhee in Tennessee has edged down: down 19% on the route-weighted index since 1968.

-19%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 Eastern Towhee 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 Eastern Towhee in Tennessee. See the full index history below.

Eastern Towhee Population Forecast in Tennessee

If the recent trend holds, Eastern Towhee in Tennessee is projected to stay roughly flat through 2030, near 9.8 (95% range 7.4–12). A 5-year backtest shows a typical error of ±14.1%, with 100% of held-out values landing inside the 95% band.

+9%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 →
9.8Projected 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 →
7.4–1295% 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 →
±14.1%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, Eastern Towhee in Tennessee is projected to stay roughly flat through 2030, near 9.8 (95% range 7.4–12). A 5-year backtest shows a typical error of ±14.1%, 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 →
20269.87.512
20279.87.412
20289.87.412
20299.87.412
20309.87.412

Eastern Towhee Survey Routes in Tennessee

Routes recording Eastern Towhee 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 →
Humboldt3320251966
Lovell2820191966
Corryton Rd2720191966
Bradyville2520211966
Fish Springs2520231966
Indian Mound2319981966
Tibbs2120251966
Big Sandy2120251966
Soddy2119811967
Tullahoma1820151967
Mt Olive1820241966
Jones Gap1620191982
Mansfield1520251966
Silver Pt1520241966
Climer1320041967
Brownsville1220251966
Red Bank1219781966
Collinwood1120251966
White House1120191966
Glen1120251966
Trenton1020231966
Pond Creek1020251966
Petersburg1020191966
Campbellsville920191966
Union Hill920241967

Eastern Towhee Population Trend in Other States

alabamaarkansasconnecticutdelawarefloridageorgiaillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanew-hampshirenew-jerseynew-yorknorth-carolinanorth-dakotaohiooklahomapennsylvaniarhode-islandsouth-carolinasouth-dakotatexasvermontvirginiawest-virginiawisconsinwyoming

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