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Species · Mississippi · BBS 2025 Release · 1966–2024

Louisiana Waterthrush Population Trend in Mississippi

All statesForest birds

Louisiana Waterthrush in Mississippi has surged: up 131% on the route-weighted index since 1971.

+131%Since 1971TrendPercent 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 →
35Routes 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 →
46YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Louisiana Waterthrush Trends in MississippiNotable 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 →

Louisiana Waterthrush has surged in Mississippi: up 131% on the route-weighted index since 1971.

Louisiana Waterthrush Population Forecast in Mississippi

If the recent trend holds, Louisiana Waterthrush in Mississippi is projected to fall about 36% by 2029 — from 0.21 in 2024 to a central estimate of 0.14 (95% range 0.00–0.30). A 5-year backtest shows a typical error of ±27.4%, with 100% of held-out values landing inside the 95% band.

-36%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 →
0.14Projected 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 →
0.00–0.3095% 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 →
±27.4%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, Louisiana Waterthrush in Mississippi is projected to fall about 36% by 2029 — from 0.21 in 2024 to a central estimate of 0.14 (95% range 0.00–0.30). A 5-year backtest shows a typical error of ±27.4%, with 100% of held-out values landing inside the 95% band.19662029
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 →
20250.130.000.30
20260.130.000.30
20270.140.000.30
20280.140.000.30
20290.140.000.30

Louisiana Waterthrush Survey Routes in Mississippi

Routes recording Louisiana Waterthrush in Mississippi.
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 →
Trace Central320162015
Lake Como220122012
Grenada Lake220141997
Columbia220151975
Trace Choctaw220192017
Olive Branch 2220212018
Embry220241990
Beverly120101971
Commerce119891977
Benton120082008
Okatibbee L.120002000
Utica119701966
Lucien119781975
Fayette119951977
Delta N.F.120152015
Cockrum120192019
Tippo119961996
Duck Hill120241987
Trace Lorman120192016
Trace Hinds120162016
Trace Attala120182016
Corinth120231975
Tupelo119881988
Trace Chickasaw120232014
Scooba119811972

Louisiana Waterthrush Population Trend in Other States

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

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