BirdAnalyst
Species · Utah · BBS 2026 Release · 1966–2025

American Crow Population Trend in Utah

All statesGeneralists

American Crow in Utah has risen sharply: up 51% on the route-weighted index since 1971.

+51%Since 1971TrendPercent 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 →
50Routes 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 →
47YearsYears 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 UtahNotable 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 risen sharply in Utah: up 51% on the route-weighted index since 1971.

American Crow Population Forecast in Utah

If the recent trend holds, American Crow in Utah is projected to rise about 47% by 2030 — from 0.75 in 2025 to a central estimate of 1.1 (95% range 0.05–2.2). A 5-year backtest shows a typical error of ±30.5%, with 80% of held-out values landing inside the 95% band.

+47%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 →
1.1Projected 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 →
0.05–2.295% 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 →
±30.5%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 Utah is projected to rise about 47% by 2030 — from 0.75 in 2025 to a central estimate of 1.1 (95% range 0.05–2.2). A 5-year backtest shows a typical error of ±30.5%, with 80% 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 →
20261.10.002.1
20271.10.012.1
20281.10.022.1
20291.10.042.2
20301.10.052.2

American Crow Survey Routes in Utah

Routes recording American Crow in Utah.
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 →
Fairfield10120212016
Hardware Ranch5120231994
Pine Creek4119971997
Bicknell3020192010
Monticello2420251998
Woodruff1020252002
Gold Hill1019891989
Logan Canyon720191997
Jensen720232000
Altonah619971968
Lynn620251986
Ant Flat-Ogden Can620251994
Saleratus Cr520181995
Oak City520241972
Grizzly Rdge420092006
La Sal420001999
Goose Creek Mtn.420252002
Hanna420241998
Canyon Rims420222008
Escalante419991999
Castleton319851969
Promontory220112011
Lost Cr. Res220172016
Goshen220131989
La Sal 2220062003

American Crow Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasvermontvirginiawashingtonwest-virginiawisconsinwyoming

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