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

Tufted Titmouse Population Trend in Maine

All statesForest birds

Tufted Titmouse in Maine has surged: up 238× on the route-weighted index since 1984.

238×Since 1984TrendPercent 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 →
37Routes 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 →
40YearsYears 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 MaineNotable 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 Tufted Titmouse in Maine. See the full index history below.

Tufted Titmouse Population Forecast in Maine

If the recent trend holds, Tufted Titmouse in Maine is projected to fall about 26% by 2030 — from 6.6 in 2025 to a central estimate of 4.8 (95% range 2.7–7.0). A 5-year backtest shows a typical error of ±46.5%, 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 →
4.8Projected 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 →
2.7–7.095% 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 →
±46.5%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, Tufted Titmouse in Maine is projected to fall about 26% by 2030 — from 6.6 in 2025 to a central estimate of 4.8 (95% range 2.7–7.0). A 5-year backtest shows a typical error of ±46.5%, with 20% of held-out values landing inside the 95% band.19792030
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 →
20264.42.26.5
20274.52.36.6
20284.62.46.8
20294.72.56.9
20304.82.77.0

Tufted Titmouse Survey Routes in Maine

Routes recording Tufted Titmouse in Maine.
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 →
Kittery Pt3020251983
Turner 22620252011
Westbrook2320241989
Bowdoin Ctr2020211989
Cape Neddick1520241986
Brownfield 21520252010
Newcastle1420241992
Greenwood1220251995
Harmony820251996
Biddeford720191984
Searsport720252004
Turner620101992
Hartford620251998
Brooks620212005
Hancock620252009
Reeds520252023
Rome520241996
Jefferson420101999
Church Hill420172000
Otisfield Gr320151986
Manchester319941994
Eastbrook320242013
Cornville320252012
South Arm220092007
Bethel120172006

Tufted Titmouse Population Trend in Other States

alabamaarkansasconnecticutdelawarefloridageorgiaillinoisindianaiowakansaskentuckylouisianamarylandmassachusettsmichiganminnesotamississippimissourinebraskanew-hampshirenew-jerseynew-yorknorth-carolinaohiooklahomapennsylvaniarhode-islandsouth-carolinatennesseetexasvermontvirginiawest-virginiawisconsin

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