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Species · Wisconsin · BBS 2025 Release · 1966–2024

Eastern Wood-Pewee Population Trend in Wisconsin

All statesAerial insectivores

Eastern Wood-Pewee in Wisconsin has risen sharply: up 61% on the route-weighted index since 1968.

+61%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 →
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 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 61% 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 16% by 2029 — from 7.1 in 2024 to a central estimate of 6.0 (95% range 4.5–7.5). A 5-year backtest shows a typical error of ±16.5%, with 60% of held-out values landing inside the 95% band.

-16%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 →
6.0Projected 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 →
4.5–7.595% 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 →
±16.5%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 16% by 2029 — from 7.1 in 2024 to a central estimate of 6.0 (95% range 4.5–7.5). A 5-year backtest shows a typical error of ±16.5%, with 60% 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 →
20255.94.47.4
20265.94.47.4
20275.94.47.4
20286.04.57.5
20296.04.57.5

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 →
Cadott2920241966
Mather2620231966
N Freedom2620241966
Stevens Pt2320231966
Pardeeville2320241967
Gresham2320241998
Fall River2120241966
Gilmanton1920241966
Washington I1720241967
River Falls1520241999
Union Twp1420241966
Mukwonago 21220242005
Popple River1120241966
Viroqua1120241966
Paris1120241966
Raymond1120241966
Weyerhauser1020241967
Amberg1020241980
Esdaile1020241966
Trempealeau1020241966
Saxeville1020241966
Weirgor Springs1020241999
Highland1020241998
Mcnaughton920241966
Hatfield919981970

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 2026-05-22.