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

Common Raven In Great Basin

All regionsGreat BasinGeneralists

Common Raven in Great Basin has surged: up 264% on the route-weighted index since 1970.

+264%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 →
265Routes 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 →

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 →

Common Raven has surged in Great Basin: up 264% on the route-weighted index since 1970.

Common Raven In Great Basin Population Forecast

If the recent trend holds, Common Raven in Great Basin is projected to rise about 16% by 2030 — from 14 in 2025 to a central estimate of 17 (95% range 14–20). A 5-year backtest shows a typical error of ±9.2%, with 100% of held-out values landing inside the 95% band.

+16%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 →
17Projected 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 →
14–2095% 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 →
±9.2%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, Common Raven in Great Basin is projected to rise about 16% by 2030 — from 14 in 2025 to a central estimate of 17 (95% range 14–20). A 5-year backtest shows a typical error of ±9.2%, 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 →
2026161319
2027161319
2028161319
2029161419
2030171420

Routes In Great Basin

Routes recording Common Raven 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 →
Tractor FlatIDAHO1042025
PrincetonOREGON831985
FairfieldUTAH802024
NewcastleUTAH702025
LeamingtonUTAH632017
Timpie SpgUTAH542003
PromontoryUTAH512025
MinervaNEVADA402024
Dobbin CreekNEVADA392018
Trout CreekOREGON392025
Stock ResUTAH392021
Iron Springs 2UTAH392025
Honey LakeCALIFORNIA382025
UmatillaOREGON382025
CliveUTAH382021
IngallsCALIFORNIA362025
Fandango CanOREGON362025
Malheur NwrOREGON342022
SnowvilleUTAH342025
CraneOREGON332024
Arid Land ErWASHINGTON331996
PotholesWASHINGTON322023
DorrisCALIFORNIA312019
GrantsvilleUTAH312025
Hanford SiteWASHINGTON311996

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