BirdAnalyst
Species · South Carolina · BBS 2026 Release · 1966–2025

Tufted Titmouse Population Trend in South Carolina

All statesForest birds

Tufted Titmouse in South Carolina has surged: up 315% on the route-weighted index since 1968.

+315%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 →
51Routes 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 South CarolinaNotable 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 South Carolina: up 315% on the route-weighted index since 1968.

Tufted Titmouse Population Forecast in South Carolina

If the recent trend holds, Tufted Titmouse in South Carolina is projected to stay roughly flat through 2030, near 25 (95% range 18–32). A 5-year backtest shows a typical error of ±25.4%, with 80% of held-out values landing inside the 95% band.

-6%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 →
25Projected 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 →
18–3295% 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 →
±25.4%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 South Carolina is projected to stay roughly flat through 2030, near 25 (95% range 18–32). A 5-year backtest shows a typical error of ±25.4%, with 80% 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 →
2026241631
2027241732
2028241732
2029251732
2030251832

Tufted Titmouse Survey Routes in South Carolina

Routes recording Tufted Titmouse in South Carolina.
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 →
Kiawah Island5820251998
Coward4820251966
Green Sea4320252010
Ridgeway4320252010
Mount Pisgah4320251998
Owings 23920252005
New Ellenton3720252010
Little Mtn3519881966
Chesnee3420151992
Campobello3220252010
New Holland2920251967
Carvers Bay2920121998
Wagener2720251967
Nixville2720251998
Plum Branch2620251977
Red Bluff2620251996
Dillon2520211971
Bishopville2320251970
Salem2320252010
Blacksburg2220131998
Rome2120251967
Greenwood2120251998
Battlecreek2120251999
Anderson2120181977
Hardeeville2020251967

Tufted Titmouse Population Trend in Other States

alabamaarkansasconnecticutdelawarefloridageorgiaillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourinebraskanew-hampshirenew-jerseynew-yorknorth-carolinaohiooklahomapennsylvaniarhode-islandtennesseetexasvermontvirginiawest-virginiawisconsin

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