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Species · Michigan · BBS 2026 Release · 1966–2025

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 →
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 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 21% by 2030 — from 25 in 2025 to a central estimate of 30 (95% range 22–39). A 5-year backtest shows a typical error of ±22.1%, with 100% of held-out values landing inside the 95% band.

+21%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 →
30Projected 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 →
22–3995% 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 →
±22.1%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, American Crow in Michigan is projected to rise about 21% by 2030 — from 25 in 2025 to a central estimate of 30 (95% range 22–39). A 5-year backtest shows a typical error of ±22.1%, with 100% 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 →
2026302238
2027302238
2028302239
2029302239
2030302239

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
Pickford7220251973
North Branch5919991974
Scottville5320251968
Crystal Fls5120251979
Galesburg4620251966
Mayfield4620252000
No Bradley4520251970
Almena4520151993
Wilson4420101966
Lawrence4320251969
Juniata4120241966
Drayton Plns3819871973
Bootjack3720231967
Nashville3620251968
Herron3620162011
Lapeer3620252000
Chippewa Lk.3620251992
Pleasant Valley 23520252004
Hungerford3520251991
Ishpeming3420251980
Skeels3420151966
New Troy3320241971
Hubbard Lake3219961973
Cohoctah3220252021

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 2026-08-14.