BirdAnalyst
Species · Michigan · BBS 2025 Release · 1966–2024

American Crow Population Trend in Michigan

All statesGeneralists

American Crow in Michigan has edged up: up 19% on the route-weighted index since 1968.

+19%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 American Crow 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 →

No notable trend signals for American Crow in Michigan. See the full index history below.

American Crow Population Forecast in Michigan

If the recent trend holds, American Crow in Michigan is projected to rise about 17% by 2029 — from 26 in 2024 to a central estimate of 31 (95% range 23–39). A 5-year backtest shows a typical error of ±28.5%, with 80% of held-out values landing inside the 95% band.

+17%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 →
31Projected 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 →
23–3995% 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 →
±28.5%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, American Crow in Michigan is projected to rise about 17% by 2029 — from 26 in 2024 to a central estimate of 31 (95% range 23–39). A 5-year backtest shows a typical error of ±28.5%, with 80% 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 →
2025312239
2026312239
2027312239
2028312339
2029312339

American Crow Survey Routes in Michigan

Routes recording American Crow 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 →
Deckerville8020241978
No Bradley7720241970
Lapeer6920242000
Ned Lake6120241986
Howardsville6020241969
North Branch5919991974
Skegemog Pt4920241974
Almena4520151993
Wilson4420101966
Pickford4320241973
Bell Oak 24320232016
Mayfield4220222000
Juniata4120241966
Cohoctah4120242021
Coopersville3920241979
Mottville3820241967
Drayton Plns3819871973
Belding 23820242004
Bootjack3720231967
Nashville3720241968
Galesburg3720241966
Herron3620162011
Hamburg 23620242004
Crystal Fls3420241979
Skeels3420151966

American Crow Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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