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Species · Oklahoma · BBS 2025 Release · 1966–2024

Chihuahuan Raven Population Trend in Oklahoma

All statesGeneralists

Chihuahuan Raven in Oklahoma has surged: up 12× on the route-weighted index since 1972.

12×Since 1972TrendPercent 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 →
7Routes In StateSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
41YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Chihuahuan Raven Trends in OklahomaNotable 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 →

Chihuahuan Raven has surged in Oklahoma: up 12× on the route-weighted index since 1972.

Chihuahuan Raven Population Forecast in Oklahoma

If the recent trend holds, Chihuahuan Raven in Oklahoma is projected to rise about 332% by 2029 — from 0.24 in 2024 to a central estimate of 1.0 (95% range 0.00–2.6). A 5-year backtest shows a typical error of ±1040.5%, with 100% of held-out values landing inside the 95% band.

+332%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 →
1.0Projected 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 →
0.00–2.695% 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 →
±1040.5%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, Chihuahuan Raven in Oklahoma is projected to rise about 332% by 2029 — from 0.24 in 2024 to a central estimate of 1.0 (95% range 0.00–2.6). A 5-year backtest shows a typical error of ±1040.5%, 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 →
20250.970.002.5
20260.980.002.5
20271.00.002.5
20281.00.002.6
20291.00.002.6

Chihuahuan Raven Survey Routes in Oklahoma

Routes recording Chihuahuan Raven in Oklahoma.
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 →
Felt7220231968
Keyes420241993
Hooker320242018
Hardesty219731973
Clear Lake119961996
Grimes119841971
Erick119881973

Chihuahuan Raven Population Trend in Other States

arizonacoloradokansasnew-mexicotexas

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