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Species · Louisiana · BBS 2026 Release · 1966–2025

Wood Thrush Population Trend in Louisiana

All statesForest birds

Wood Thrush in Louisiana has held roughly steady: up 7% on the route-weighted index since 1969.

+7%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 →
73Routes 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 →
58YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Wood Thrush 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 →

No notable trend signals for Wood Thrush in Louisiana. See the full index history below.

Wood Thrush Population Forecast in Louisiana

If the recent trend holds, Wood Thrush in Louisiana is projected to fall about 30% by 2030 — from 5.0 in 2025 to a central estimate of 3.5 (95% range 1.0–6.0). A 5-year backtest shows a typical error of ±47.1%, with 20% of held-out values landing inside the 95% band.

-30%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 →
3.5Projected 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 →
1.0–6.095% 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 →
±47.1%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, Wood Thrush in Louisiana is projected to fall about 30% by 2030 — from 5.0 in 2025 to a central estimate of 3.5 (95% range 1.0–6.0). A 5-year backtest shows a typical error of ±47.1%, with 20% of held-out values landing inside the 95% band.19672030
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 →
20263.61.16.1
20273.61.16.1
20283.51.06.0
20293.51.06.0
20303.51.06.0

Wood Thrush Survey Routes in Louisiana

Routes recording Wood Thrush 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 →
Norwood2120252004
Linville1920251998
Chatham1419751967
Fort Jessup1320231998
Flat Creek1320251998
Plettenberg1220221968
Goodwill1220252004
Pine Prairie1219971995
Mount Union1120251998
Greensburg1020221988
Lake Cove1020182008
Grayson1020212005
Enterprise1020252006
Burr Ferry1020251987
Franklinton920252008
Trout920251988
Bickham820251984
Oakdale819941991
Fishville 2820252018
Mayflower720251967
Fishville720171967
Evelyn720242004
Womack720251999
Cheniere720251984
Lacombe619831967

Wood Thrush Population Trend in Other States

alabamaarkansasconnecticutdelawarefloridageorgiaillinoisindianaiowakansaskentuckymainemarylandmassachusettsmichiganminnesotamississippimissourinebraskanew-hampshirenew-jerseynew-yorknorth-carolinaohiooklahomapennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasvermontvirginiawest-virginiawisconsin

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