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Species · Wyoming · BBS 2026 Release · 1966–2025

American Crow Population Trend in Wyoming

All statesGeneralists

American Crow in Wyoming has surged: up 182% on the route-weighted index since 1970.

+182%Since 1970TrendPercent 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 →
57YearsYears 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 WyomingNotable 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 →

American Crow has surged in Wyoming: up 182% on the route-weighted index since 1970.

American Crow Population Forecast in Wyoming

If the recent trend holds, American Crow in Wyoming is projected to rise about 78% by 2030 — from 2.1 in 2025 to a central estimate of 3.8 (95% range 2.1–5.5). A 5-year backtest shows a typical error of ±66.8%, with 60% of held-out values landing inside the 95% band.

+78%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 →
3.8Projected 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 →
2.1–5.595% 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 →
±66.8%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 Wyoming is projected to rise about 78% by 2030 — from 2.1 in 2025 to a central estimate of 3.8 (95% range 2.1–5.5). A 5-year backtest shows a typical error of ±66.8%, with 60% of held-out values landing inside the 95% band.19682030
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 →
20263.61.95.3
20273.72.05.4
20283.72.05.4
20293.82.15.5
20303.82.15.5

American Crow Survey Routes in Wyoming

Routes recording American Crow in Wyoming.
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 →
Seely4620001990
Seely 22720252001
Sundance2420251975
Buckskin Mtn2019921992
Boulder1920251982
Savery1719951989
Alpine1520251979
Lysite1320241991
Savery 21220252007
Basin1020092006
Clarkelen1019751974
Riverside820251969
Moose720251976
Meeteetse720251992
Bairoil720241990
Gvnt Valley720251992
Fontenelle620251982
Bear Creek620162007
Buford620251976
Mammoth619991987
Warbonnet620251990
Wamsutter620241997
Yellowstone620221987
Otto520171970
Big Sandy520251989

American Crow Population Trend in Other States

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

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14.