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

Common Raven Population Trend in Colorado

All statesGeneralists

Common Raven in Colorado has surged: up 717% on the route-weighted index since 1971.

+717%Since 1971
127Routes In State
55Years

Notable Common Raven Trends in Colorado

long arc increasecomputed index

Common Raven has surged in Colorado: up 717% on the route-weighted index since 1971.

Common Raven Population Forecast in Colorado

If the recent trend holds, Common Raven in Colorado is projected to rise about 21% by 2029 — from 6.2 in 2024 to a central estimate of 7.5 (95% range 5.4–9.6). A 5-year backtest shows a typical error of ±23.1%, with 100% of held-out values landing inside the 95% band.

+21%Change by 2029
7.5Projected 2029 index
5.4–9.695% range
±23.1%Backtest error
19692029
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
20257.04.99.1
20267.15.09.2
20277.25.29.3
20287.45.39.4
20297.55.49.6

Common Raven Survey Routes in Colorado

Routes recording Common Raven in Colorado.
Animas5120041996
Cortez 25020172009
San Luis4520241991
Moffat3920241970
Mesita3220242005
Weston Pass2620001994
Angora2520241998
Basin2420241995
Mount Evans2320241996
Pritchett2120171995
Westcliffe2020241998
Deadman Rd.1820241992
Piceance Basin1820121998
Blackhead Pk1620211991
Guffey1520241990
Paonia1520241992
Delta1420211974
Pleasant View1420212021
Buffalo Park1420231992
Baxter Pass1420241994
Blanca1319871981
Pinon1320241992
Rifle Falls1320211998
Black Sulphur Cr1320242015
Wray Gulch1220231988

Common Raven Population Trend in Other States

alaskaarizonacaliforniaconnecticutgeorgiaidahokentuckymainemarylandmassachusettsmichiganminnesotamontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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