BirdAnalyst
Species · South Dakota · BBS 2025 Release · 1966–2024

Eastern Wood-Pewee Population Trend in South Dakota

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Eastern Wood-Pewee in South Dakota has increased: up 37% on the route-weighted index since 1969.

+37%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 →
14Routes 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 →
24YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Eastern Wood-Pewee Trends in South DakotaNotable 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 Eastern Wood-Pewee in South Dakota. See the full index history below.

Eastern Wood-Pewee Population Forecast in South Dakota

If the recent trend holds, Eastern Wood-Pewee in South Dakota is projected to fall about 25% by 2029 — from 0.09 in 2024 to a central estimate of 0.07 (95% range 0.00–0.15). A 5-year backtest shows a typical error of ±49.9%, with 80% of held-out values landing inside the 95% band.

-25%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 →
0.07Projected 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 →
0.00–0.1595% 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 →
±49.9%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, Eastern Wood-Pewee in South Dakota is projected to fall about 25% by 2029 — from 0.09 in 2024 to a central estimate of 0.07 (95% range 0.00–0.15). A 5-year backtest shows a typical error of ±49.9%, with 80% 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 →
20250.070.000.15
20260.070.000.15
20270.070.000.15
20280.070.000.15
20290.070.000.15

Eastern Wood-Pewee Survey Routes in South Dakota

Routes recording Eastern Wood-Pewee in South Dakota.
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 →
Chamberlain419901990
Tripp220232023
Wilmot220241971
Britton220091982
Conde219681968
Lennox119841984
Howard120162016
White Lake119741974
Geddes120181989
Volga120161967
Raymond120121967
Broadland119711971
Veblen120231971
Long Lake120152015

Eastern Wood-Pewee Population Trend in Other States

alabamaarkansasconnecticutdelawarefloridageorgiaillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanew-hampshirenew-jerseynew-yorknorth-carolinanorth-dakotaohiooklahomapennsylvaniarhode-islandsouth-carolinatennesseetexasvermontvirginiawest-virginiawisconsin

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