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Species · Maryland · BBS 2026 Release · 1966–2025

Tufted Titmouse Population Trend in Maryland

All statesForest birds

Tufted Titmouse in Maryland has surged: up 123% on the route-weighted index since 1968.

+123%Since 1968TrendPercent 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 →
76Routes 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 →
59YearsYears 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 MarylandNotable 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 Maryland: up 123% on the route-weighted index since 1968.

Tufted Titmouse Population Forecast in Maryland

If the recent trend holds, Tufted Titmouse in Maryland is projected to stay roughly flat through 2030, near 26 (95% range 22–31). A 5-year backtest shows a typical error of ±3.4%, with 100% of held-out values landing inside the 95% band.

+1%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 →
26Projected 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 →
22–3195% 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 →
±3.4%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 Maryland is projected to stay roughly flat through 2030, near 26 (95% range 22–31). A 5-year backtest shows a typical error of ±3.4%, with 100% of held-out values landing inside the 95% band.19662030
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 →
2026252130
2027252130
2028262130
2029262130
2030262231

Tufted Titmouse Survey Routes in Maryland

Routes recording Tufted Titmouse in Maryland.
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 →
Olney7220251966
Cokesbury6320251966
Ijamsville6220251986
Island Creek6220251991
Forest Grove5420232011
Hughesville4620251966
La Plata4220091966
Furnace Town4220252015
Jennings4120251995
Emmitsburg4020251966
Pomonkey4020251966
Pr Frederick3520251991
Nottingham3420252005
Honga3320251966
Fruitland3319981966
Silver Spg2719891966
Piney Grove2720251995
Eklo2620181966
Madison2620251966
Earlton2620242014
Davidsnville2620251982
Pt Republic2519891966
Easton2520251966
Vienna2520251966
Finzel2520251995

Tufted Titmouse Population Trend in Other States

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

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