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Species · BCR 26 · BBS 2026 Release · 1966–2025

Wood Thrush In Mississippi Alluvial Valley

All regionsMississippi Alluvial ValleyForest birds

Wood Thrush in Mississippi Alluvial Valley has declined: down 46% on the route-weighted index since 1968.

-46%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 →
58Routes In RegionSurvey 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 SignalsNotable 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 Mississippi Alluvial Valley. See the full index history below.

Wood Thrush In Mississippi Alluvial Valley Population Forecast

If the recent trend holds, Wood Thrush in Mississippi Alluvial Valley is projected to fall about 34% by 2030 — from 1.7 in 2025 to a central estimate of 1.1 (95% range 0.00–2.5). A 5-year backtest shows a typical error of ±46.1%, with 100% of held-out values landing inside the 95% band.

-34%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 →
1.1Projected 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 →
0.00–2.595% 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 →
±46.1%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 Mississippi Alluvial Valley is projected to fall about 34% by 2030 — from 1.7 in 2025 to a central estimate of 1.1 (95% range 0.00–2.5). A 5-year backtest shows a typical error of ±46.1%, 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 →
20261.30.002.6
20271.20.002.6
20281.20.002.6
20291.10.002.5
20301.10.002.5

Routes In Mississippi Alluvial Valley

Routes recording Wood Thrush in Mississippi Alluvial Valley.
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 →
Crowley'S RidgeARKANSAS132025
BardwellKENTUCKY122003
TchulaMISSISSIPPI101975
Warren VickMISSISSIPPI92022
MayflowerLOUISIANA72025
Dahomey NwrMISSISSIPPI72025
RoselandLOUISIANA62025
Tchula 3MISSISSIPPI62025
ShawLOUISIANA52024
River RoadLOUISIANA52000
CommerceMISSISSIPPI51993
TallahatchieMISSISSIPPI42025
GonzalesLOUISIANA32019
FrogmoreLOUISIANA32025
DelhiLOUISIANA32017
Tchula 2MISSISSIPPI31994
Delta N.F.MISSISSIPPI32018
Cp GirardeauMISSOURI32024
South BendARKANSAS22025
HarrisburgARKANSAS22010
WilsonARKANSAS21994
Augusta 2ARKANSAS22007
RamahLOUISIANA22002
Rayville 2LOUISIANA22025
AtchafalayaLOUISIANA22025

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