BirdAnalyst
Species · Nevada · BBS 2026 Release · 1966–2025

Common Raven Population Trend in Nevada

All statesGeneralists

Common Raven in Nevada has surged: up 305% on the route-weighted index since 1970.

+305%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 →
56Routes 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 Common Raven Trends in NevadaNotable 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 Nevada: up 304% on the route-weighted index since 1970.

Common Raven Population Forecast in Nevada

If the recent trend holds, Common Raven in Nevada is projected to rise about 111% by 2030 — from 9.5 in 2025 to a central estimate of 20 (95% range 6.4–34). A 5-year backtest shows a typical error of ±72.1%, with 100% of held-out values landing inside the 95% band.

+111%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 →
20Projected 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 →
6.4–3495% 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 →
±72.1%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 Nevada is projected to rise about 111% by 2030 — from 9.5 in 2025 to a central estimate of 20 (95% range 6.4–34). A 5-year backtest shows a typical error of ±72.1%, 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 →
2026195.533
2027195.733
2028205.933
2029206.233
2030206.434

Common Raven Survey Routes in Nevada

Routes recording Common Raven in Nevada.
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 →
Minerva4020241988
Dobbin Creek3920181970
Cortez2720251968
Toiyabe Nf2620241987
Piute Mdws2520252005
Caliente2520251988
Walker Can2420241968
Fish Creek1820211997
Frenchman1819781973
Majors Place1820251968
Charleston Reservoir1820242024
Mizpah1720241988
Meadow Vally1720251996
Eureka1620241969
Ruby Valley 21620242004
Mill City1620232013
Chimney Res.1620252005
Dinner Sta1519931968
Vya1419741968
Rye Patch1419871970
Hiko1220251970
Midas1120251974
Darroughs Hot Spgs1120242000
Sand Pass1020251979
Ruby Valley1020011997

Common Raven Population Trend in Other States

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

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