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

Common Raven Population Trend in Wyoming

All statesGeneralists

Common Raven in Wyoming has surged: up 103% on the route-weighted index since 1970.

+103%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 →
111Routes 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 →
56YearsYears 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 WyomingNotable 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 Wyoming: up 103% on the route-weighted index since 1970.

Common Raven Population Forecast in Wyoming

If the recent trend holds, Common Raven in Wyoming is projected to stay roughly flat through 2030, near 6.0 (95% range 4.4–7.7). A 5-year backtest shows a typical error of ±12.4%, with 80% of held-out values landing inside the 95% band.

-0%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 →
6.0Projected 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 →
4.4–7.795% 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 →
±12.4%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 Wyoming is projected to stay roughly flat through 2030, near 6.0 (95% range 4.4–7.7). A 5-year backtest shows a typical error of ±12.4%, with 80% 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 →
20265.74.17.4
20275.84.17.5
20285.94.27.5
20296.04.37.6
20306.04.47.7

Common Raven Survey Routes in Wyoming

Routes recording Common Raven in Wyoming.
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 →
Kaycee4520252022
Elk Horn3820181988
Warbonnet3420252000
Riverside2820251969
Lovell2320251989
Arminto2120252004
Nowood1720251988
Harmony1620251987
Baggs1520251995
Pathfinder1420252015
Gas Hills 21420252013
Yellowstone1420251987
Farson1320251995
Ethete1220251991
Gas Hills1220121991
Wamsutter1120252002
Carter 21120252017
Tensleep1020251997
Sweetwater1020251982
Lamont1020251993
Sybille Cyn1020251993
Elk Horn 21020252022
Carter1020162016
Colter Bay 21020252019
Ne Entrance920251982

Common Raven Population Trend in Other States

alaskaarizonacaliforniacoloradoconnecticutgeorgiaidahokentuckymainemarylandmassachusettsmichiganminnesotamontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsin

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