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Species · Tennessee · BBS 2026 Release · 1966–2025

Tufted Titmouse Population Trend in Tennessee

All statesForest birds

Tufted Titmouse in Tennessee has risen sharply: up 68% on the route-weighted index since 1968.

+68%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 Tufted Titmouse 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 →

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 →

Tufted Titmouse has risen sharply in Tennessee: up 68% on the route-weighted index since 1968.

Tufted Titmouse Population Forecast in Tennessee

If the recent trend holds, Tufted Titmouse in Tennessee is projected to rise about 35% by 2030 — from 18 in 2025 to a central estimate of 24 (95% range 19–29). A 5-year backtest shows a typical error of ±33.8%, with 20% of held-out values landing inside the 95% band.

+35%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 →
24Projected 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 →
19–2995% 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 →
±33.8%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, Tufted Titmouse in Tennessee is projected to rise about 35% by 2030 — from 18 in 2025 to a central estimate of 24 (95% range 19–29). A 5-year backtest shows a typical error of ±33.8%, with 20% 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 →
2026231828
2027231828
2028231828
2029231829
2030241929

Tufted Titmouse Survey Routes in Tennessee

Routes recording Tufted Titmouse 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 →
Trace Lewis6320172013
Trace Collinwood5520182015
Signal Mtn3620251979
Bradyville3520211966
Mansfield3320251966
Collinwood3220251966
Indian Mound 23220232004
Indian Mound2819981966
Mt Olive2820241966
Trenton2620231966
Brownsville2520251966
Big Sandy2520251966
Elk Valley2520251970
Pond Creek2420251966
Jones Gap2320191982
Humboldt2220251966
Wrigley2120221966
Smokey Jct2120221966
Lovell2020191966
Lewis Forest1920251966
Fish Springs1920231966
Tiptonville1820251966
Belotes Bend1820181966
Sweetlips1720231966
Petersburg1720191966

Tufted Titmouse Population Trend in Other States

alabamaarkansasconnecticutdelawarefloridageorgiaillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourinebraskanew-hampshirenew-jerseynew-yorknorth-carolinaohiooklahomapennsylvaniarhode-islandsouth-carolinatexasvermontvirginiawest-virginiawisconsin

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