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

American Crow In Southern Rockies / Colorado Plateau

All regionsSouthern Rockies / Colorado PlateauGeneralists

American Crow in Southern Rockies / Colorado Plateau has surged: up 101% on the route-weighted index since 1970.

+101%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 →
159Routes 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 →

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 →

American Crow has surged in Southern Rockies / Colorado Plateau: up 100% on the route-weighted index since 1970.

American Crow In Southern Rockies / Colorado Plateau Population Forecast

If the recent trend holds, American Crow in Southern Rockies / Colorado Plateau is projected to rise about 22% by 2029 — from 3.7 in 2024 to a central estimate of 4.5 (95% range 3.1–5.9). A 5-year backtest shows a typical error of ±26.7%, with 80% of held-out values landing inside the 95% band.

+22%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 →
4.5Projected 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 →
3.1–5.995% 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 →
±26.7%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 Southern Rockies / Colorado Plateau is projected to rise about 22% by 2029 — from 3.7 in 2024 to a central estimate of 4.5 (95% range 3.1–5.9). A 5-year backtest shows a typical error of ±26.7%, with 80% 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 →
20254.33.05.7
20264.43.05.8
20274.43.15.8
20284.53.15.9
20294.53.15.9

Routes In Southern Rockies / Colorado Plateau

Routes recording American Crow 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 →
Mcphee Res.COLORADO502024
YampaCOLORADO492023
Gold HillCOLORADO492012
Douglas PassCOLORADO462024
Stinking Lk.NEW-MEXICO381999
Deadman Rd.COLORADO322024
BicknellUTAH302019
WarbonnetWYOMING252023
Fletcher PkWYOMING252024
De BequeCOLORADO222024
RadiumCOLORADO222013
Steamboat L.COLORADO202024
Yellowjacket PassCOLORADO192024
Fox CreekCOLORADO182024
AntonitoCOLORADO172004
BufordCOLORADO162024
Owl Creek PassCOLORADO162024
Animas 2COLORADO152021
FlattopsCOLORADO142019
Lizard Head PassCOLORADO142024
Angel FireNEW-MEXICO142002
ColonaCOLORADO132014
Gold Hill 2COLORADO132024
MoffatCOLORADO122024
AnimasCOLORADO122004

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