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Species · BCR 14 · BBS 2025 Release · 1966–2024

Tufted Titmouse In Atlantic Northern Forest

All regionsAtlantic Northern ForestForest birds

Tufted Titmouse in Atlantic Northern Forest has surged: up 108× on the route-weighted index since 1974.

108×Since 1974TrendPercent 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 →
95Routes In RegionSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
52YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable SignalsNotable 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 Atlantic Northern Forest: up 108× on the route-weighted index since 1974.

Tufted Titmouse In Atlantic Northern Forest Population Forecast

If the recent trend holds, Tufted Titmouse in Atlantic Northern Forest is projected to fall about 20% by 2029 — from 7.3 in 2024 to a central estimate of 5.8 (95% range 4.4–7.2). A 5-year backtest shows a typical error of ±30.4%, with 20% of held-out values landing inside the 95% band.

-20%Change by 2029TrendPercent 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 →
5.8Projected 2029 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
4.4–7.295% 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 →
±30.4%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 Atlantic Northern Forest is projected to fall about 20% by 2029 — from 7.3 in 2024 to a central estimate of 5.8 (95% range 4.4–7.2). A 5-year backtest shows a typical error of ±30.4%, with 20% of held-out values landing inside the 95% band.19722029
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 →
20255.33.96.8
20265.54.16.9
20275.64.27.0
20285.74.37.1
20295.84.47.2

Routes In Atlantic Northern Forest

Routes recording Tufted Titmouse in Atlantic Northern Forest.
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 →
N OrangeMASSACHUSETTS282024
CanterburyNEW-HAMPSHIRE272024
WestbrookMAINE232024
Turner 2MAINE212024
MontereyMASSACHUSETTS212024
Post MillsVERMONT212024
Bowdoin CtrMAINE202021
HopkintonNEW-HAMPSHIRE192024
MarlboroVERMONT192024
ConcordNEW-HAMPSHIRE182024
MarlowNEW-HAMPSHIRE172024
FitzwilliamNEW-HAMPSHIRE152024
NewcastleMAINE142024
SheffieldMASSACHUSETTS142022
HancockMASSACHUSETTS142015
PeterboroughNEW-HAMPSHIRE142024
S HoriconNEW-YORK142018
ChesterfieldMASSACHUSETTS132024
WilmotNEW-HAMPSHIRE122024
PittsfieldMASSACHUSETTS112016
CornvilleMAINE102024
Cummington 2MASSACHUSETTS102024
Gilmantn I WNEW-HAMPSHIRE102024
WalpoleNEW-HAMPSHIRE102024
SearsportMAINE92024

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.