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

American Crow Population Trend in Wisconsin

All statesGeneralists

American Crow in Wisconsin has held roughly steady: up 9% on the route-weighted index since 1968.

+9%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 American Crow 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 →

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

American Crow Population Forecast in Wisconsin

If the recent trend holds, American Crow in Wisconsin is projected to rise about 26% by 2029 — from 33 in 2024 to a central estimate of 42 (95% range 28–55). A 5-year backtest shows a typical error of ±50%, with 0% of held-out values landing inside the 95% band.

+26%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 →
42Projected 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 →
28–5595% 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 →
±50%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 Wisconsin is projected to rise about 26% by 2029 — from 33 in 2024 to a central estimate of 42 (95% range 28–55). A 5-year backtest shows a typical error of ±50%, with 0% 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 →
2025422855
2026422855
2027422855
2028422855
2029422855

American Crow Survey Routes in Wisconsin

Routes recording American Crow 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 →
Omro12520011966
Iron River7320241967
Wis Rapids7320231966
Princeton7020241966
Stetsonville6920241990
Holway6819891967
Fall River6620241966
Dresser6220241966
Stevens Pt6120231966
Weirgor Springs6120241999
Cumberland6020241966
Meridean6020241998
Hudson5720241966
Cochrane5720241966
Pt Washingtn5720241966
Briggsville5720241999
Beloit5520241998
Cadott5120241966
Esdaile5020241966
Loraine4820211966
Saxeville4820241966
Clintonville4820241967
Pardeeville4820241967
Kendall4720231967
New Lisbon4620241967

American Crow Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawyoming

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