BirdAnalyst
Species · BCR 9 · BBS 2025 Release · 1966–2024

American Crow In Great Basin

All regionsGreat BasinGeneralists

American Crow in Great Basin has increased: up 39% on the route-weighted index since 1970.

+39%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 →
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 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 stay roughly flat through 2029, near 4.8 (95% range 3.1–6.5). A 5-year backtest shows a typical error of ±8.7%, with 100% of held-out values landing inside the 95% band.

+0%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 →
4.8Projected 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 →
3.1–6.595% 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 →
±8.7%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 stay roughly flat through 2029, near 4.8 (95% range 3.1–6.5). A 5-year backtest shows a typical error of ±8.7%, 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 →
20254.83.16.4
20264.83.16.5
20274.83.16.5
20284.83.16.5
20294.83.16.5

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
ImnahaOREGON702024
UmatillaOREGON702023
Toiyabe NfNEVADA662024
Iron GateCALIFORNIA652019
LeadoreIDAHO612024
Fish LakeOREGON562024
Hardware RanchUTAH512023
Catlow RimOREGON472024
Pine CreekUTAH411997
BatesIDAHO402023
PocatelloIDAHO342019
NighthawkWASHINGTON322024
Daniels ResIDAHO282019
KendallWASHINGTON272024
Ruby Valley 2NEVADA262024
TwispWASHINGTON242024
IndexWASHINGTON241971
SnowdenWASHINGTON222024
Crowley LakeCALIFORNIA211986
SquirrelIDAHO212024
Ruby ValleyNEVADA212001
OrdnanceOREGON201979
Glenns FerryIDAHO191986
HenryIDAHO181983

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.