BirdAnalyst
Species · New Mexico · BBS 2026 Release · 1966–2025

Chihuahuan Raven Population Trend in New Mexico

All statesGeneralists

Chihuahuan Raven in New Mexico has edged up: up 21% on the route-weighted index since 1970.

+21%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 →
50Routes 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 →
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 Chihuahuan Raven Trends in New MexicoNotable 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 Chihuahuan Raven in New Mexico. See the full index history below.

Chihuahuan Raven Population Forecast in New Mexico

If the recent trend holds, Chihuahuan Raven in New Mexico is projected to rise about 69% by 2030 — from 4.5 in 2025 to a central estimate of 7.6 (95% range 3.2–12). A 5-year backtest shows a typical error of ±33.3%, with 100% of held-out values landing inside the 95% band.

+69%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 →
7.6Projected 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 →
3.2–1295% 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 →
±33.3%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 New Mexico is projected to rise about 69% by 2030 — from 4.5 in 2025 to a central estimate of 7.6 (95% range 3.2–12). A 5-year backtest shows a typical error of ±33.3%, 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 →
20267.53.112
20277.63.112
20287.63.112
20297.63.212
20307.63.212

Chihuahuan Raven Survey Routes in New Mexico

Routes recording Chihuahuan Raven in New Mexico.
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 →
Maljamar6119771975
Pep4720241992
Rosebud4220251994
Hobbs3020251994
Red Rock2620251992
Raton2519941994
Lake Valley1620241989
Caprock1520251977
Variadero1520221994
Pastura1520251993
Rodeo1420251974
Deming1319751968
Mountainair1320231992
Gage1220251968
Mesilla1220001992
Floyd1120251968
Claunch 2920142001
Sunshine Wll820251992
Valencia719971988
Corona East719951993
Hatchet Peak720251992
Engle719891979
Claunch619991978
Magdalena620142001
Grenville520251977

Chihuahuan Raven Population Trend in Other States

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