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

European Starling Population Trend in Wyoming

All statesGeneralists

European Starling in Wyoming has surged: up 495% on the route-weighted index since 1970.

+495%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 →
116Routes 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 European Starling 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 →

European Starling has surged in Wyoming: up 495% on the route-weighted index since 1970.

European Starling Population Forecast in Wyoming

If the recent trend holds, European Starling in Wyoming is projected to stay roughly flat through 2030, near 18 (95% range 7.4–29). A 5-year backtest shows a typical error of ±38.9%, with 40% of held-out values landing inside the 95% band.

+6%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 →
18Projected 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 →
7.4–2995% 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 →
±38.9%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, European Starling in Wyoming is projected to stay roughly flat through 2030, near 18 (95% range 7.4–29). A 5-year backtest shows a typical error of ±38.9%, with 40% 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 →
2026176.728
2027176.928
2028187.128
2029187.328
2030187.429

European Starling Survey Routes in Wyoming

Routes recording European Starling 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 →
Arvada30220251982
Lingle26720241980
Cody23620251983
Mayoworth14620241983
Yoder14420251968
Ethete9520251991
Meeteetse9020251991
Otto8920251970
Dayton8320251980
Recluse6720221981
Basin6020251970
Worland5020242009
Green River4919841977
Midvale4020251974
Dwyer3520251992
Clark3220241990
Elk Horn 23020222022
Bill2920181974
Cheyenne2820241981
Sussex2720251991
Rozet2620251993
Gebo2420251983
Warbonnet2420041990
Fontenelle2220251982
Tensleep2120251995

European Starling Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsin

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