BirdAnalyst
Species · Arizona · BBS 2025 Release · 1966–2024

Chihuahuan Raven Population Trend in Arizona

All statesGeneralists

Chihuahuan Raven in Arizona has collapsed: down 78% on the route-weighted index since 1970.

-78%Since 1970
17Routes In State
55Years

Notable Chihuahuan Raven Trends in Arizona

long arc declinecomputed index

Chihuahuan Raven has collapsed in Arizona: down 78% on the route-weighted index since 1970.

Chihuahuan Raven Population Forecast in Arizona

If the recent trend holds, Chihuahuan Raven in Arizona is projected to fall about 100% by 2029 — from 0.57 in 2024 to a central estimate of 0.00 (95% range 0.00–2.7). A 5-year backtest shows a typical error of ±128.9%, with 100% of held-out values landing inside the 95% band.

-100%Change by 2029
0.00Projected 2029 index
0.00–2.795% range
±128.9%Backtest error
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 index95% low95% high
20250.000.002.7
20260.000.002.7
20270.000.002.7
20280.000.002.7
20290.000.002.7

Chihuahuan Raven Survey Routes in Arizona

Routes recording Chihuahuan Raven in Arizona.
Mcneal1620241992
San Simon1420221982
Florence1319681968
Sunizona1019971968
Ajo819701970
The Gap719731973
Amado720231993
Patagonia420041968
Sunizona 2420242001
Peña Blanca420101980
Portal220221990
Dragoon220051993
Rucker220091993
Sahuarita220101994
Cibola Lake119961996
Red Rock119991995
Pomerene120221968

Chihuahuan Raven Population Trend in Other States

coloradokansasnew-mexicooklahomatexas

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