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

Sora Population Trend in Wyoming

All statesWetland birds

Sora in Wyoming has increased: up 31% on the route-weighted index since 1972.

+31%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 →
49YearsYears 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 →

No notable trend signals for Sora in Wyoming. See the full index history below.

Sora Population Forecast in Wyoming

If the recent trend holds, Sora in Wyoming is projected to rise about 13% by 2029 — from 0.18 in 2024 to a central estimate of 0.20 (95% range 0.00–0.42). A 5-year backtest shows a typical error of ±11.1%, with 100% of held-out values landing inside the 95% band.

+13%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 →
0.20Projected 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 →
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 →
±11.1%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 rise about 13% by 2029 — from 0.18 in 2024 to a central estimate of 0.20 (95% range 0.00–0.42). A 5-year backtest shows a typical error of ±11.1%, 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 →
20250.200.000.41
20260.200.000.41
20270.200.000.41
20280.200.000.41
20290.200.000.42

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 →
Sybille Cyn520152000
Otto319871980
Natrona319831982
Mammoth320241982
Meeteetse320232021
Crowheart320212008
Big Sandy320241992
Mtn View320241989
Hayden Val219861985
Fontenelle220211992
Buford220162016
Carter 2220242019
Dayton220241994
Wilson220231979
Soda Lake219851985
Elk Horn 2220222022
Ne Entrance120161993
Cody120172001
Basin120171972
Wyarno120242005
Yellowstone120191987
Colter Bay119901968
Dubois120241989
Midvale119991999
Nowood120101993

Sora Population Trend in Other States

alaskaarizonacaliforniacoloradoidahoillinoisindianaiowakansasmainemassachusettsmichiganminnesotamontananebraskanevadanew-hampshirenew-mexiconew-yorknorth-dakotaohiooregonpennsylvaniasouth-dakotautahvermontwashingtonwisconsin

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