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

American Crow Population Trend in Idaho

All statesGeneralists

American Crow in Idaho has held roughly steady: down 4% on the route-weighted index since 1970.

-4%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 →
56YearsYears 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 44% by 2029 — from 6.2 in 2024 to a central estimate of 3.4 (95% range 0.00–9.5). A 5-year backtest shows a typical error of ±42.8%, with 100% of held-out values landing inside the 95% band.

-44%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 →
3.4Projected 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 →
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 →
±42.8%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 Idaho is projected to fall about 44% by 2029 — from 6.2 in 2024 to a central estimate of 3.4 (95% range 0.00–9.5). A 5-year backtest shows a typical error of ±42.8%, with 100% of held-out values landing inside the 95% band.19682029
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 →
20253.90.0010.0
20263.80.009.9
20273.70.009.8
20283.60.009.7
20293.40.009.5

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
Daniels Res2820191988
Cape Horn2420211986
Squirrel2120241971
Glenns Ferry1919861968
Henry1819831973
Naples1620241972
Cascade1419841968
Iron Springs1420241988
Picabo1420211988
Magic Mtn1120241987
Salmon River1120211988
Triangle1020241985
Coolin920241987
Pasadena Val820161987
Cabarton620231985
Blacks Creek520121968
Sawtooth City 2520182018
Gifford420171986
Nezperce420081968
Springfield420171969
Featherville420241989
Almo420221988

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 2026-05-22.