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Species · Michigan · BBS 2025 Release · 1966–2024

Eastern Wood-Pewee Population Trend in Michigan

All statesAerial insectivores

Eastern Wood-Pewee in Michigan has surged: up 148% on the route-weighted index since 1968.

+148%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 →
108Routes 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 MichiganNotable 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 Michigan: up 148% on the route-weighted index since 1968.

Eastern Wood-Pewee Population Forecast in Michigan

If the recent trend holds, Eastern Wood-Pewee in Michigan is projected to stay roughly flat through 2029, near 6.7 (95% range 5.1–8.3). A 5-year backtest shows a typical error of ±12.1%, with 100% of held-out values landing inside the 95% band.

-6%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 →
6.7Projected 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 →
5.1–8.395% 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 →
±12.1%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 Michigan is projected to stay roughly flat through 2029, near 6.7 (95% range 5.1–8.3). A 5-year backtest shows a typical error of ±12.1%, with 100% 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 →
20256.54.98.1
20266.54.98.1
20276.65.08.2
20286.65.08.2
20296.75.18.3

Eastern Wood-Pewee Survey Routes in Michigan

Routes recording Eastern Wood-Pewee in Michigan.
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 →
Monterey2520241978
Nashville2120241968
Hubbard Lake1619961973
Harrietta1520241990
Big Island Lake1520102008
Cohoctah1420242021
Almena1420151993
Betchler Lks1320241992
Sand Lake1220241978
Cluster Lakes1220102006
Bear Lake1120241967
Scottville1120241968
Bravo1120231974
Chippewa Lk.1120241992
Barry S.G.A.1120121995
Holt1020241969
Pleasant Valley 21020242023
Walloon Lake 21020242005
Hiawatha Nf1020241992
Gooseneck1020102008
Big Blue Lk920241979
Belding920031983
Raco920241971
Homer920241978
Herron920162011

Eastern Wood-Pewee Population Trend in Other States

alabamaarkansasconnecticutdelawarefloridageorgiaillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsminnesotamississippimissourimontananebraskanew-hampshirenew-jerseynew-yorknorth-carolinanorth-dakotaohiooklahomapennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasvermontvirginiawest-virginiawisconsin

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