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

Sora Population Trend in Idaho

All statesWetland birds

Sora in Idaho has edged up: up 15% on the route-weighted index since 1972.

+15%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 →
31Routes 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 →
51YearsYears 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 IdahoNotable 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 Idaho. See the full index history below.

Sora Population Forecast in Idaho

If the recent trend holds, Sora in Idaho is projected to rise about 37% by 2029 — from 0.20 in 2024 to a central estimate of 0.27 (95% range 0.04–0.50). A 5-year backtest shows a typical error of ±40.8%, with 60% of held-out values landing inside the 95% band.

+37%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 →
0.27Projected 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 →
0.04–0.5095% 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 →
±40.8%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 Idaho is projected to rise about 37% by 2029 — from 0.20 in 2024 to a central estimate of 0.27 (95% range 0.04–0.50). A 5-year backtest shows a typical error of ±40.8%, with 60% of held-out values landing inside the 95% band.19702029
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 →
20250.270.040.50
20260.270.040.50
20270.270.040.50
20280.270.040.50
20290.270.040.50

Sora Survey Routes in Idaho

Routes recording Sora in Idaho.
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 →
Naples420241988
Cascade319841983
Ririe220001993
Bates220231988
Cabarton220231985
Blackft Res120151984
Mivoden120231980
Nezperce119991992
Lolo Pass119991999
Golden119971997
Baker120231981
Cape Horn120181994
Challis120191986
Leadore120231987
Squirrel120231971
Springfield120171970
Magic Mtn120231992
Pocatello119831983
Coolin119891989
Sawtooth City 2120192019
Joel119911991
Crane Creek120052005
Iron Springs120241989
Picabo120101996
Mud Lake120051993

Sora Population Trend in Other States

alaskaarizonacaliforniacoloradoillinoisindianaiowakansasmainemassachusettsmichiganminnesotamontananebraskanevadanew-hampshirenew-mexiconew-yorknorth-dakotaohiooregonpennsylvaniasouth-dakotautahvermontwashingtonwisconsinwyoming

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