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

Common Raven Population Trend in Utah

All statesGeneralists

Common Raven in Utah has surged: up 262% on the route-weighted index since 1970.

+262%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 →
114Routes 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 UtahNotable 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 Utah: up 262% on the route-weighted index since 1970.

Common Raven Population Forecast in Utah

If the recent trend holds, Common Raven in Utah is projected to rise about 22% by 2029 — from 14 in 2024 to a central estimate of 17 (95% range 8.2–27). A 5-year backtest shows a typical error of ±19%, with 100% of held-out values landing inside the 95% band.

+22%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 →
17Projected 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 →
8.2–2795% 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 →
±19%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 Utah is projected to rise about 22% by 2029 — from 14 in 2024 to a central estimate of 17 (95% range 8.2–27). A 5-year backtest shows a typical error of ±19%, 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 →
2025177.426
2026177.626
2027177.826
2028178.026
2029178.227

Common Raven Survey Routes in Utah

Routes recording Common Raven in Utah.
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 →
Snowville8620241999
Fairfield8020241987
Leamington6320171992
Timpie Spg5420031978
Newcastle5020221997
Stock Res3920211986
Clive3820212001
Westwater3820241997
Pine Creek3720231998
Monticello3620241998
Promontory3420241969
Iron Springs 23220242024
Gold Hill2620241987
Iron Springs2520231979
Aneth2520241986
Wellington 32320242012
Blanding2120241987
Gandy2120151997
Lynn2020231982
Fish Springs2020241987
Vernon2020241992
Peplin Mountain2020241999
La Sal 22020062003
Dragerton1920221970
Canyonlands1820241986

Common Raven Population Trend in Other States

alaskaarizonacaliforniacoloradoconnecticutgeorgiaidahokentuckymainemarylandmassachusettsmichiganminnesotamontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinatennesseetexasvermontvirginiawashingtonwest-virginiawisconsinwyoming

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