BirdAnalyst
Species · BCR 24 · BBS 2025 Release · 1966–2024

Wood Thrush In Central Hardwoods

All regionsCentral HardwoodsForest birds

Wood Thrush in Central Hardwoods has increased: up 36% on the route-weighted index since 1968.

+36%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 →
159Routes 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 →
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 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 Central Hardwoods. See the full index history below.

Wood Thrush In Central Hardwoods Population Forecast

If the recent trend holds, Wood Thrush in Central Hardwoods is projected to fall about 29% by 2029 — from 7.6 in 2024 to a central estimate of 5.4 (95% range 3.4–7.4). A 5-year backtest shows a typical error of ±40.1%, with 0% of held-out values landing inside the 95% band.

-29%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 →
5.4Projected 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 →
3.4–7.495% 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 →
±40.1%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 Central Hardwoods is projected to fall about 29% by 2029 — from 7.6 in 2024 to a central estimate of 5.4 (95% range 3.4–7.4). A 5-year backtest shows a typical error of ±40.1%, with 0% 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 →
20255.43.47.4
20265.43.47.4
20275.43.47.4
20285.43.47.4
20295.43.47.4

Routes In Central Hardwoods

Routes recording Wood Thrush in Central Hardwoods.
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 →
BelmontINDIANA502024
RomeOHIO442024
HoosierINDIANA362024
DelwoodILLINOIS292024
Mammoth CaveKENTUCKY292014
Trace CollinwoodTENNESSEE292018
Osage BeachMISSOURI262024
BrownsvilleKENTUCKY252024
Mammoth Cave NorthKENTUCKY232013
Indian SpgsINDIANA202024
GeorgiaINDIANA192024
Doe RunMISSOURI192024
Indian MoundTENNESSEE191998
ComptonARKANSAS182022
CollinwoodTENNESSEE182024
Indian Mound 2TENNESSEE182023
SanduskyILLINOIS162023
Cross PlainsINDIANA162024
WescoMISSOURI162024
Valhermoso Spg 2ALABAMA152014
Ozark NfARKANSAS152024
BelknapILLINOIS152024
CumbackINDIANA152021
New PhilaINDIANA152024
CascadeMISSOURI152024

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