Species · BBS 2026 Release · 1966–2025

Common Raven Population Analysis

Common Raven has surged: up 868% on the route-weighted index since 1968.

About the Common Raven

The Common Raven (Corvus corax) is a North American member of the Crows, Jays & Magpies (Corvidae). In this analysis it is grouped with the generalists.

Size
10–27.5 in long (25–70 cm) — a medium to large songbird (typical for the family)
Habitat
A broad range of open and wooded habitats, often near people.
Diet
An opportunistic mix of insects, seeds, fruit and scraps.
Range
Recorded on 2,202 Breeding Bird Survey routes across 37 states, most concentrated in the Great Basin.
Family
Corvidae · Generalists

Notable Common Raven TrendsNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

Common Raven has surged in surveyed states: up 868% on the route-weighted index since 1968.

Common Raven Population Forecast

If the recent trend holds, Common Raven is projected to rise about 11% by 2030 — from 3.7 in 2025 to a central estimate of 4.2 (95% range 3.7–4.6). A 5-year backtest shows a typical error of ±12.6%, with 60% of held-out values landing inside the 95% band.

If the recent trend holds, Common Raven is projected to rise about 11% by 2030 — from 3.7 in 2025 to a central estimate of 4.2 (95% range 3.7–4.6). A 5-year backtest shows a typical error of ±12.6%, with 60% of held-out values landing inside the 95% band.19662030
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 →
20263.93.54.4
20274.03.54.4
20284.03.64.5
20294.13.64.6
20304.23.74.6

Where the Common Raven Is Detected

BBS routes recording Common Raven, sized by most recent count.

Common Raven Population Trend by State

Common Raven population trend by state.
TrendPercent 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 →Baseline yearThe first year of the smoothed window the trend is measured from. An earlier baseline means a longer record stands behind the number.Full methodology →Survey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
Alaska+53%1972132
Arizona+2%197091
California+96%1970258
Colorado+716%1971130
Connecticut+748%200216
Georgiainsufficient datan/a3
Idaho+275%197166
Kentuckyinsufficient datan/a1
Maine-22%196876
Maryland78×197425
Massachusetts+860%198521
Michigan+51%196860
Minnesota+687%196951
Montana+342%197096
Nebraskainsufficient datan/a1
Nevada+305%197056
New Hampshire+951%196826
New Jersey+721%199610
New Mexico+87%197079
New York61×197697
North Carolina+176%197726
North Dakota+518%200417
Ohioinsufficient datan/a3
Oklahomainsufficient datan/a2
Oregon+123%1970145
Pennsylvania22×1969103
Rhode Islandinsufficient datan/a4
South Carolinainsufficient datan/a2
Tennessee-1%19947
Texas+332%196961
Utah+261%1970114
Vermont26×196926
Virginia+245%196954
Washington+504%1970112
West Virginia18×197355
Wisconsin+250%196865
Wyoming+103%1970111

Common Raven Population Trend by Region

Bird Conservation Regions are the ecological unit for trends.

Common Raven population trend by Bird Conservation Region.
TrendPercent 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 →Baseline yearThe first year of the smoothed window the trend is measured from. An earlier baseline means a longer record stands behind the number.Full methodology →Survey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
BCR 2-30%198624
BCR 3+137%19955
BCR 4+87%197867
Northern Pacific Rainforest+41%1970162
Great Basin+264%1970265
Northern Rockies+115%1970227
Prairie Potholes24×198336
Boreal Hardwood Transition+103%1968125
Lower Great Lakes / St. Lawrence Plain21×198254
Atlantic Northern Forest+415%1968150
Sierra Nevada31×197337
Southern Rockies / Colorado Plateau+11%1970243
Badlands and Prairies55×197246
Shortgrass Prairie+231%197153
Central Mixed Grass Prairie-21%196910
Edwards Plateau12×197816
Prairie Hardwood Transition32×196941
Appalachian Mountains24×1968260
Piedmont+572%198145
New England / Mid-Atlantic Coast24×199146
Coastal California+448%1970116
Sonoran and Mojave Deserts+7%197086
Sierra Madre Occidental+592%197037
Chihuahuan Desert+277%196943

Common Raven Conservation Status

Our route-weighted index shows it up about 868% since 1968.

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14. Trend is a route-weighted relative-abundance index, not an absolute population.