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

Common Raven Population Trend in Wyoming

All statesGeneralists

Common Raven in Wyoming has surged: up 89% on the route-weighted index since 1970.

+89%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 →
107Routes 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 →
55YearsYears 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 89% 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 fall about 15% by 2029 — from 6.9 in 2024 to a central estimate of 5.9 (95% range 4.2–7.6). A 5-year backtest shows a typical error of ±9.3%, with 100% of held-out values landing inside the 95% band.

-15%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 →
5.9Projected 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 →
4.2–7.695% 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 →
±9.3%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 fall about 15% by 2029 — from 6.9 in 2024 to a central estimate of 5.9 (95% range 4.2–7.6). A 5-year backtest shows a typical error of ±9.3%, with 100% of held-out values landing inside the 95% band.19682029
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 →
20255.63.97.2
20265.74.07.3
20275.74.17.4
20285.84.27.5
20295.94.27.6

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 →
Kaycee9520242022
Ne Entrance4720211982
Walcott4220241992
Sand Draw4020241993
Elk Horn3820181988
Baggs2720241995
Worland1920242009
Meeteetse1820241991
Arminto1820242004
Fox Park1820241992
Bald Mtn1720241990
Warbonnet1620242000
Buford1520241978
Sweetwater1520241982
Reliance1520182018
Wamsutter1520242002
Otto1320241974
Big Sandy1320241983
Cody1220241983
Gas Hills1220121991
Pathfinder1220242015
Carter1020162016
Basin920241980
Fontenelle920241982
Gebo920241981

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 2026-05-22.