BirdAnalyst
Species · West Virginia · BBS 2025 Release · 1966–2024

Wood Duck Population Trend in West Virginia

All statesWaterfowl

Wood Duck in West Virginia has edged down: down 18% on the route-weighted index since 1969.

-18%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 →
43Routes 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 →
54YearsYears 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 Duck Trends in West VirginiaNotable 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 Duck in West Virginia. See the full index history below.

Wood Duck Population Forecast in West Virginia

If the recent trend holds, Wood Duck in West Virginia is projected to fall about 42% by 2029 — from 0.30 in 2024 to a central estimate of 0.17 (95% range 0.00–0.84). A 5-year backtest shows a typical error of ±61.3%, with 100% of held-out values landing inside the 95% band.

-42%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 →
0.17Projected 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 →
0.00–0.8495% 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 →
±61.3%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 Duck in West Virginia is projected to fall about 42% by 2029 — from 0.30 in 2024 to a central estimate of 0.17 (95% range 0.00–0.84). A 5-year backtest shows a typical error of ±61.3%, with 100% 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 →
20250.180.000.85
20260.180.000.85
20270.180.000.84
20280.180.000.84
20290.170.000.84

Wood Duck Survey Routes in West Virginia

Routes recording Wood Duck in West Virginia.
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 →
Sugar Grove720061972
Josephs Mill320242002
Smoot220041986
Bramwell220062006
Hanover220241995
Clear Creek220241995
Hubbardstown220041989
Lost River220172002
Cedarville220231982
Mo Of Seneca220241976
Rockport220211967
Monongah220171971
Bebee220242009
Meadowville220222018
Yellow Spg220221972
Martinsburg220221967
Clinton220191975
Hix120192004
Pedro120231986
Ghent120182017
Welch120042004
Bowden120212019
Pt Pleasant120151976
Meadland120142014
Spencer120192002

Wood Duck Population Trend in Other States

alabamaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwisconsinwyoming

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