BirdAnalyst
Species · North Carolina · BBS 2025 Release · 1966–2024

Common Raven Population Trend in North Carolina

All statesGeneralists

Common Raven in North Carolina has surged: up 148% on the route-weighted index since 1977.

+148%Since 1977TrendPercent 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 →
26Routes 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 →
43YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Common Raven Trends in North CarolinaNotable 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 →

Common Raven has surged in North Carolina: up 148% on the route-weighted index since 1977.

Common Raven Population Forecast in North Carolina

If the recent trend holds, Common Raven in North Carolina is projected to fall about 55% by 2029 — from 0.23 in 2024 to a central estimate of 0.10 (95% range 0.00–0.31). A 5-year backtest shows a typical error of ±135.1%, with 100% of held-out values landing inside the 95% band.

-55%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 →
0.10Projected 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 →
0.00–0.3195% 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 →
±135.1%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, Common Raven in North Carolina is projected to fall about 55% by 2029 — from 0.23 in 2024 to a central estimate of 0.10 (95% range 0.00–0.31). A 5-year backtest shows a typical error of ±135.1%, with 100% of held-out values landing inside the 95% band.19712029
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 →
20250.110.000.32
20260.110.000.32
20270.110.000.32
20280.100.000.32
20290.100.000.31

Common Raven Survey Routes in North Carolina

Routes recording Common Raven in North Carolina.
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 →
Highlands320241998
Busick219991994
Youngsville220222022
Copeland220242003
Osmond220242024
French Broad River220242006
Oteen220191983
Waterville120242017
Table Rock120191996
Kyle120222022
Jonas Ridge119711971
Brevard120221995
Cherokee120242011
Fontana120152006
Arcola120112011
Call120212019
Cullowhee120211978
Linville120241976
Sturgills120232010
Siloam120242024
Wilgrove120222022
Marshall120241999
Todd120211995
Mount Airy120242005
Sawmill120212021

Common Raven Population Trend in Other States

alaskaarizonacaliforniacoloradoconnecticutgeorgiaidahokentuckymainemarylandmassachusettsmichiganminnesotamontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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