BirdAnalyst
Species · New Hampshire · BBS 2026 Release · 1966–2025

Tufted Titmouse Population Trend in New Hampshire

All statesForest birds

Tufted Titmouse in New Hampshire has surged: up 205× on the route-weighted index since 1978.

205×Since 1978TrendPercent 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 →
22Routes 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 →
49YearsYears 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 New HampshireNotable 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 New Hampshire: up 205× on the route-weighted index since 1978.

Tufted Titmouse Population Forecast in New Hampshire

If the recent trend holds, Tufted Titmouse in New Hampshire is projected to rise about 20% by 2030 — from 13 in 2025 to a central estimate of 16 (95% range 14–18). A 5-year backtest shows a typical error of ±10.6%, with 60% of held-out values landing inside the 95% band.

+20%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 →
16Projected 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 →
14–1895% 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 →
±10.6%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 New Hampshire is projected to rise about 20% by 2030 — from 13 in 2025 to a central estimate of 16 (95% range 14–18). A 5-year backtest shows a typical error of ±10.6%, with 60% of held-out values landing inside the 95% band.19752030
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 →
2026151317
2027151317
2028151317
2029161418
2030161418

Tufted Titmouse Survey Routes in New Hampshire

Routes recording Tufted Titmouse in New Hampshire.
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 →
Hopkinton3420251988
Strafford3020251975
Dover2820251980
Canterbury2520251982
East Kingston2520251999
Fitzwilliam2220251987
Concord1820251984
Gilmantn I W1820251983
Marlow1820251984
Epsom1620251980
Mt Chocorua1620251987
Glen1420251989
Lempster1320252000
Walpole1220251985
Brentwood1119981975
Peterborough920251980
Wilmot620251981
Jefferson Hl220252001
Franconia120251998
Milan119991999
Stratford120251999
Jeffers Ntch120242003

Tufted Titmouse Population Trend in Other States

alabamaarkansasconnecticutdelawarefloridageorgiaillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourinebraskanew-jerseynew-yorknorth-carolinaohiooklahomapennsylvaniarhode-islandsouth-carolinatennesseetexasvermontvirginiawest-virginiawisconsin

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