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

American Crow Population Trend in Idaho

All statesGeneralists

American Crow in Idaho has held roughly steady: down 3% on the route-weighted index since 1970.

-3%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 →
53Routes 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 IdahoNotable 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 Idaho. See the full index history below.

American Crow Population Forecast in Idaho

If the recent trend holds, American Crow in Idaho is projected to fall about 33% by 2030 — from 5.1 in 2025 to a central estimate of 3.4 (95% range 0.00–9.5). A 5-year backtest shows a typical error of ±40.1%, with 100% of held-out values landing inside the 95% band.

-33%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 →
3.4Projected 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 →
0.00–9.595% 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 →
±40.1%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 Idaho is projected to fall about 33% by 2030 — from 5.1 in 2025 to a central estimate of 3.4 (95% range 0.00–9.5). A 5-year backtest shows a typical error of ±40.1%, with 100% 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 →
20263.90.009.9
20273.80.009.8
20283.70.009.7
20293.50.009.6
20303.40.009.5

American Crow Survey Routes in Idaho

Routes recording American Crow in Idaho.
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 →
Leadore6120241974
Bates4020231988
Pocatello3420191979
Naples2920251972
Daniels Res2720251988
Almo2520251988
Cape Horn2420211986
Glenns Ferry1919861968
Henry1819831973
Squirrel1720251971
Cascade1419841968
Magic Mtn1420251987
Iron Springs1420241988
Challis1220251975
Picabo1220251988
Triangle1020251985
Dubois920251973
Pasadena Val820161987
Coolin620251987
Blacks Creek520121968
Sawtooth City 2520182018
Rochat Divde520251996
Gifford420171986
Nezperce420081968
Springfield420171969

American Crow Population Trend in Other States

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

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