BirdAnalyst
Species · BCR 16 · BBS 2025 Release · 1966–2024

Common Raven In Southern Rockies / Colorado Plateau

All regionsSouthern Rockies / Colorado PlateauGeneralists

Common Raven in Southern Rockies / Colorado Plateau has edged up: up 10% on the route-weighted index since 1970.

+10%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 →
242Routes 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 Common Raven in Southern Rockies / Colorado Plateau. See the full index history below.

Common Raven In Southern Rockies / Colorado Plateau Population Forecast

If the recent trend holds, Common Raven in Southern Rockies / Colorado Plateau is projected to stay roughly flat through 2029, near 12 (95% range 8.1–16). A 5-year backtest shows a typical error of ±15.4%, with 100% of held-out values landing inside the 95% band.

+8%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 →
12Projected 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 →
8.1–1695% 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 →
±15.4%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 Southern Rockies / Colorado Plateau is projected to stay roughly flat through 2029, near 12 (95% range 8.1–16). A 5-year backtest shows a typical error of ±15.4%, 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 →
2025127.615
2026127.716
2027127.816
2028128.016
2029128.116

Routes In Southern Rockies / Colorado Plateau

Routes recording Common Raven in Southern Rockies / Colorado Plateau.
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 →
Black MesaARIZONA801995
Peach SpringARIZONA572024
SanosteeNEW-MEXICO542024
AnimasCOLORADO512004
Cortez 2COLORADO502017
San LuisCOLORADO452024
MoffatCOLORADO392024
WestwaterUTAH382024
SeligmanARIZONA372024
MonticelloUTAH362024
MountainairNEW-MEXICO352024
QuemadoNEW-MEXICO331997
TsaileARIZONA322023
MesitaCOLORADO322024
McgaffeyNEW-MEXICO312023
House RockARIZONA292022
CrownpointNEW-MEXICO291996
Many FarmsARIZONA282006
HuntARIZONA272018
Weston PassCOLORADO262000
YampaiARIZONA251977
AngoraCOLORADO252024
PecosNEW-MEXICO252017
AnethUTAH252024
BasinCOLORADO242024

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