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

Tufted Titmouse Population Trend in Vermont

All statesForest birds

Tufted Titmouse in Vermont has surged: up 53× on the route-weighted index since 1986.

53×Since 1986TrendPercent 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 →
24Routes 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 →
41YearsYears 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 VermontNotable 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 surged in Vermont: up 52× on the route-weighted index since 1986.

Tufted Titmouse Population Forecast in Vermont

If the recent trend holds, Tufted Titmouse in Vermont is projected to fall about 26% by 2030 — from 8.2 in 2025 to a central estimate of 6.0 (95% range 4.2–7.8). A 5-year backtest shows a typical error of ±35%, with 20% of held-out values landing inside the 95% band.

-26%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 →
6.0Projected 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 →
4.2–7.895% 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 →
±35%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 Vermont is projected to fall about 26% by 2030 — from 8.2 in 2025 to a central estimate of 6.0 (95% range 4.2–7.8). A 5-year backtest shows a typical error of ±35%, with 20% of held-out values landing inside the 95% band.19772030
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 →
20265.43.77.2
20275.63.87.4
20285.73.97.5
20295.94.17.7
20306.04.27.8

Tufted Titmouse Survey Routes in Vermont

Routes recording Tufted Titmouse in Vermont.
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 →
Shaftsbury3420251986
Marlboro2620251988
North Pownal1720251985
Bristol1620251995
Gaysville1220251996
Post Mills1020251990
S Wallingfrd920221991
W Rutland920251987
S Reading620241977
Landgrove420252005
St Johnsbury420251993
Fletcher420252008
Newbury 2420232022
Stowe420241998
Stratton320252015
East Haven320252019
Hinesburg219941994
Colchester220251997
Northfld Fls120252011
Middlesex120252006
East Calais120182018
Hardwick120052005
Greensboro120251997
Grand Isle119971997

Tufted Titmouse Population Trend in Other States

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

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