BirdAnalyst
Species · North Dakota · BBS 2026 Release · 1966–2025

Eastern Wood-Pewee Population Trend in North Dakota

All statesAerial insectivores

Eastern Wood-Pewee in North Dakota has surged: up 173% on the route-weighted index since 1969.

+173%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 →
21Routes 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 →
57YearsYears 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 North DakotaNotable 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 →

Eastern Wood-Pewee has surged in North Dakota: up 173% on the route-weighted index since 1969.

Eastern Wood-Pewee Population Forecast in North Dakota

If the recent trend holds, Eastern Wood-Pewee in North Dakota is projected to fall about 45% by 2030 — from 0.89 in 2025 to a central estimate of 0.49 (95% range 0.20–0.78). A 5-year backtest shows a typical error of ±50.5%, with 20% of held-out values landing inside the 95% band.

-45%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 →
0.49Projected 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 →
0.20–0.7895% 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 →
±50.5%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 North Dakota is projected to fall about 45% by 2030 — from 0.89 in 2025 to a central estimate of 0.49 (95% range 0.20–0.78). A 5-year backtest shows a typical error of ±50.5%, with 20% of held-out values landing inside the 95% band.19672030
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 →
20260.470.180.76
20270.470.180.76
20280.480.190.77
20290.480.190.77
20300.490.200.78

Eastern Wood-Pewee Survey Routes in North Dakota

Routes recording Eastern Wood-Pewee in North 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 →
Emerado1220251973
Cooperstown920251970
Nash320171980
Turtle Mtns320251980
Kempton220171967
Buchanan220221968
Montpelier220191990
Forman120121970
Walcott120191968
Horsehead Lk120132013
Bowesmont119781969
Lakota120011988
Webster120101997
Niles120212021
Regan120172017
Carpio119741974
Loraine119891989
Abercrombie120121967
Denbigh120241968
Solen120242024
Abercrombie 2120172017

Eastern Wood-Pewee Population Trend in Other States

alabamaarkansasconnecticutdelawarefloridageorgiaillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanew-hampshirenew-jerseynew-yorknorth-carolinaohiooklahomapennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasvermontvirginiawest-virginiawisconsin

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