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Species · Louisiana · BBS 2025 Release · 1966–2024

Tufted Titmouse Population Trend in Louisiana

All statesForest birds

Tufted Titmouse in Louisiana has surged: up 130% on the route-weighted index since 1969.

+130%Since 1969TrendPercent 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 →
94Routes 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 →
57YearsYears 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 LouisianaNotable 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 Louisiana: up 130% on the route-weighted index since 1969.

Tufted Titmouse Population Forecast in Louisiana

If the recent trend holds, Tufted Titmouse in Louisiana is projected to fall about 23% by 2029 — from 18 in 2024 to a central estimate of 14 (95% range 9.5–18). A 5-year backtest shows a typical error of ±25.1%, with 20% of held-out values landing inside the 95% band.

-23%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 →
14Projected 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 →
9.5–1895% 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 →
±25.1%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 Louisiana is projected to fall about 23% by 2029 — from 18 in 2024 to a central estimate of 14 (95% range 9.5–18). A 5-year backtest shows a typical error of ±25.1%, with 20% of held-out values landing inside the 95% band.19672029
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 →
2025139.117
2026139.217
2027139.318
2028149.418
2029149.518

Tufted Titmouse Survey Routes in Louisiana

Routes recording Tufted Titmouse in Louisiana.
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 →
Clay5220241968
Mount Union4120241998
Plettenberg3620221968
Norwood3620242004
Tensas Nwr3620241987
Atchafalaya3620241989
Lafitte3519911967
Longstreet3420241967
Natchez3120241992
Ivan 23020162014
Ramah2920241988
Flat Creek2820241998
Chatham2719751967
Ivan2720131998
Cheniere2520241984
Franklinton2520242008
Greensburg2420221988
Womack2420241999
Derry 22420241990
Fort Jessup2420231998
Easton2319901967
Goodwill2320242004
Rayville 22220242009
Evelyn2220242004
Pearl River2020241989

Tufted Titmouse Population Trend in Other States

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

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