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Species · Wisconsin · BBS 2026 Release · 1966–2025

Eastern Wood-Pewee Population Trend in Wisconsin

All statesAerial insectivores

Eastern Wood-Pewee in Wisconsin has risen sharply: up 72% on the route-weighted index since 1968.

+72%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 →
98Routes 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 →
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 Eastern Wood-Pewee Trends in WisconsinNotable 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 risen sharply in Wisconsin: up 72% on the route-weighted index since 1968.

Eastern Wood-Pewee Population Forecast in Wisconsin

If the recent trend holds, Eastern Wood-Pewee in Wisconsin is projected to fall about 20% by 2030 — from 7.8 in 2025 to a central estimate of 6.2 (95% range 4.6–7.7). A 5-year backtest shows a typical error of ±21.5%, with 40% of held-out values landing inside the 95% band.

-20%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 →
6.2Projected 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 →
4.6–7.795% 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 →
±21.5%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 Wisconsin is projected to fall about 20% by 2030 — from 7.8 in 2025 to a central estimate of 6.2 (95% range 4.6–7.7). A 5-year backtest shows a typical error of ±21.5%, with 40% 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 →
20266.04.57.6
20276.14.57.6
20286.14.57.7
20296.14.67.7
20306.24.67.7

Eastern Wood-Pewee Survey Routes in Wisconsin

Routes recording Eastern Wood-Pewee in Wisconsin.
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 →
Mather2620231966
Bashaw2520251998
Stevens Pt2320231966
Pardeeville2220251967
Gresham2120251998
Highland2020251998
Union Twp1820251966
Gilmanton1820251966
River Falls1820251999
Fall River1720251966
Esdaile1620251966
N Freedom1620251966
Wausaukee1520251980
Paris1520251966
Popple River1320251966
New Lisbon1320251967
Wiota1320251966
Hollister1220251967
Cadott1220251966
Viroqua1120241966
Stetsonville1020251990
Annaton1020251998
Mukwonago 21020252005
Minong920251967
Mcnaughton920241966

Eastern Wood-Pewee Population Trend in Other States

alabamaarkansasconnecticutdelawarefloridageorgiaillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanew-hampshirenew-jerseynew-yorknorth-carolinanorth-dakotaohiooklahomapennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasvermontvirginiawest-virginia

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