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

Sora Population Trend in Wyoming

All statesWetland birds

Sora in Wyoming has risen sharply: up 65% on the route-weighted index since 1972.

+65%Since 1972TrendPercent 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 →
51Routes 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 →
50YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Sora 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 →

Sora has risen sharply in Wyoming: up 65% on the route-weighted index since 1972.

Sora Population Forecast in Wyoming

If the recent trend holds, Sora in Wyoming is projected to stay roughly flat through 2030, near 0.21 (95% range 0.00–0.42). A 5-year backtest shows a typical error of ±14.6%, with 100% of held-out values landing inside the 95% band.

-5%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 →
0.21Projected 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 →
0.00–0.4295% 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 →
±14.6%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, Sora in Wyoming is projected to stay roughly flat through 2030, near 0.21 (95% range 0.00–0.42). A 5-year backtest shows a typical error of ±14.6%, 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 →
20260.210.000.42
20270.210.000.42
20280.210.000.42
20290.210.000.42
20300.210.000.42

Sora Survey Routes in Wyoming

Routes recording Sora 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 →
Big Sandy520251992
Sybille Cyn520152000
Otto319871980
Natrona319831982
Crowheart320212008
Mtn View320241989
Hayden Val219861985
Fontenelle220251992
Riverside220252009
Buford220162016
Mammoth220251982
Carter 2220252019
Dayton220241994
Wilson220231979
Soda Lake219851985
Boulder220252005
Ne Entrance120241993
Cody120172001
Basin120251972
Wyarno120242005
Yellowstone120251987
Colter Bay119901968
Dubois120251989
Midvale119991999
Nowood120101993

Sora Population Trend in Other States

alaskaarizonacaliforniacoloradoidahoillinoisindianaiowakansasmainemassachusettsmichiganminnesotamontananebraskanevadanew-hampshirenew-mexiconew-yorknorth-dakotaohiooregonpennsylvaniasouth-dakotautahvermontwashingtonwisconsin

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