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

Sora Population Trend in Colorado

All statesWetland birds

Sora in Colorado has surged: up 77% on the route-weighted index since 1976.

+77%Since 1976
39Routes In State
45Years

Notable Sora Trends in Colorado

long arc increasecomputed index

Sora has surged in Colorado: up 77% on the route-weighted index since 1976.

Sora Population Forecast in Colorado

If the recent trend holds, Sora in Colorado is projected to stay roughly flat through 2029, near 0.10 (95% range 0.00–0.42). A 5-year backtest shows a typical error of ±23.3%, with 100% of held-out values landing inside the 95% band.

-4%Change by 2029
0.10Projected 2029 index
0.00–0.4295% range
±23.3%Backtest error
19732029
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected index95% low95% high
20250.100.000.42
20260.100.000.42
20270.100.000.42
20280.100.000.42
20290.100.000.42

Sora Survey Routes in Colorado

Routes recording Sora in Colorado.
Walden320172017
Alamosa320241988
Yampa220161983
Colona219871983
Tarryall220192006
Castleton220231988
Doyleville220232004
Buffalo Park220231993
Deadman Rd.220211992
Fox Creek220242024
Maybell120151973
Buford120141987
Aspen119831983
Parlin120221977
Moffat120241973
Dolores119821976
Falfa119981977
Rio Grnds Rs120242002
Summitville120212000
Wray Gulch120051988
Wilson Creek120242024
Lost Lake120192002
Cortez 2120132013
Gordon Creek119951995
Dinosaur120242013

Sora Population Trend in Other States

alaskaarizonacaliforniaidahoillinoisindianaiowakansasmainemassachusettsmichiganminnesotamontananebraskanevadanew-hampshirenew-mexiconew-yorknorth-dakotaohiooregonpennsylvaniasouth-dakotautahvermontwashingtonwisconsinwyoming

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