BirdAnalyst
Species · BCR 9 · BBS 2026 Release · 1966–2025

American Crow In Great Basin

All regionsGreat BasinGeneralists

American Crow in Great Basin has edged up: up 21% on the route-weighted index since 1970.

+21%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 →
183Routes In RegionSurvey 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 SignalsNotable 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 Great Basin. See the full index history below.

American Crow In Great Basin Population Forecast

If the recent trend holds, American Crow in Great Basin is projected to rise about 41% by 2030 — from 3.3 in 2025 to a central estimate of 4.7 (95% range 3.0–6.4). A 5-year backtest shows a typical error of ±14.1%, with 100% of held-out values landing inside the 95% band.

+41%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 →
4.7Projected 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 →
3.0–6.495% 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 →
±14.1%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 Great Basin is projected to rise about 41% by 2030 — from 3.3 in 2025 to a central estimate of 4.7 (95% range 3.0–6.4). A 5-year backtest shows a typical error of ±14.1%, 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 →
20264.73.06.4
20274.73.06.4
20284.73.06.4
20294.73.06.4
20304.73.06.4

Routes In Great Basin

Routes recording American Crow in Great Basin.
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 →
FairfieldUTAH1012021
Toiyabe NfNEVADA662024
Iron GateCALIFORNIA652019
LeadoreIDAHO612024
ImnahaOREGON592025
Hardware RanchUTAH512023
Pine CreekUTAH411997
BatesIDAHO402023
PocatelloIDAHO342019
Catlow RimOREGON312025
Daniels ResIDAHO272025
Ruby Valley 2NEVADA262024
AlmoIDAHO252025
TwispWASHINGTON242024
IndexWASHINGTON241971
Crowley LakeCALIFORNIA211986
Ruby ValleyNEVADA212001
OrdnanceOREGON201979
Glenns FerryIDAHO191986
NighthawkWASHINGTON192025
HenryIDAHO181983
Fish LakeOREGON182025
SquirrelIDAHO172025
LeavenworthWASHINGTON172024
Carson RiverNEVADA162002

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