BirdAnalyst
Species · BCR 10 · BBS 2026 Release · 1966–2025

Common Raven In Northern Rockies

All regionsNorthern RockiesGeneralists

Common Raven in Northern Rockies has surged: up 115% on the route-weighted index since 1970.

+115%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 →
227Routes 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 Northern Rockies: up 115% on the route-weighted index since 1970.

Common Raven In Northern Rockies Population Forecast

If the recent trend holds, Common Raven in Northern Rockies is projected to stay roughly flat through 2030, near 8.5 (95% range 7.1–9.9). A 5-year backtest shows a typical error of ±3.8%, with 100% of held-out values landing inside the 95% band.

+10%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 →
8.5Projected 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 →
7.1–9.995% 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 →
±3.8%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, Common Raven in Northern Rockies is projected to stay roughly flat through 2030, near 8.5 (95% range 7.1–9.9). A 5-year backtest shows a typical error of ±3.8%, 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 →
20268.16.79.5
20278.26.89.6
20288.36.99.7
20298.47.09.8
20308.57.19.9

Routes In Northern Rockies

Routes recording Common Raven in Northern Rockies.
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 →
MadrasOREGON1022025
Malheur Res.OREGON672023
Church HillMONTANA502025
Elk HornWYOMING382018
RiversideWYOMING282025
CoolinIDAHO242025
NaplesIDAHO232025
Deer ParkWASHINGTON232015
LovellWYOMING232025
Red RockMONTANA222025
ArmintoWYOMING212025
EllistonMONTANA172025
BeaverheadMONTANA172025
NowoodWYOMING172025
Libby DamMONTANA162025
HarmonyWYOMING162025
Mount VernonOREGON152024
Omak CreekWASHINGTON152024
BaggsWYOMING152025
LimaMONTANA142025
MonumentOREGON142025
ChewelahWASHINGTON142021
PathfinderWYOMING142025
Gas Hills 2WYOMING142025
YellowstoneWYOMING142025

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