BirdAnalyst
Species · New Hampshire · BBS 2025 Release · 1966–2024

Tufted Titmouse Population Trend in New Hampshire

All statesForest birds

Tufted Titmouse in New Hampshire has surged: up 203× on the route-weighted index since 1978.

203×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 →
48YearsYears 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 203× 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 41% by 2029 — from 11 in 2024 to a central estimate of 16 (95% range 14–18). A 5-year backtest shows a typical error of ±12.2%, with 80% of held-out values landing inside the 95% band.

+41%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 →
16Projected 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 →
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 →
±12.2%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 41% by 2029 — from 11 in 2024 to a central estimate of 16 (95% range 14–18). A 5-year backtest shows a typical error of ±12.2%, with 80% of held-out values landing inside the 95% band.19752029
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 →
2025151217
2026151317
2027151317
2028151318
2029161418

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 →
Strafford3520241975
Canterbury2720241982
Dover2120241980
Hopkinton1920241988
East Kingston1920241999
Concord1820241984
Marlow1720241984
Fitzwilliam1520241987
Peterborough1420241980
Wilmot1220241981
Brentwood1119981975
Gilmantn I W1020241983
Walpole1020241985
Epsom920231980
Mt Chocorua920241987
Lempster920242000
Glen420241989
Jefferson Hl320242001
Franconia320241998
Milan119991999
Stratford120131999
Jeffers Ntch120242003

Tufted Titmouse Population Trend in Other States

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

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