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Species · Colorado · BBS 2025 Release · 1966–2024

Green-tailed Towhee Population Trend in Colorado

All statesGeneralists

Green-tailed Towhee in Colorado has risen sharply: up 69% on the route-weighted index since 1970.

+69%Since 1970
105Routes In State
56Years

Notable Green-tailed Towhee Trends in Colorado

long arc increasecomputed index

Green-tailed Towhee has risen sharply in Colorado: up 69% on the route-weighted index since 1970.

Green-tailed Towhee Population Forecast in Colorado

If the recent trend holds, Green-tailed Towhee in Colorado is projected to rise about 16% by 2029 — from 8.2 in 2024 to a central estimate of 9.4 (95% range 6.3–13). A 5-year backtest shows a typical error of ±13.8%, with 100% of held-out values landing inside the 95% band.

+16%Change by 2029
9.4Projected 2029 index
6.3–1395% range
±13.8%Backtest error
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 index95% low95% high
20259.26.112
20269.26.112
20279.36.212
20289.46.212
20299.46.313

Green-tailed Towhee Survey Routes in Colorado

Routes recording Green-tailed Towhee in Colorado.
Yampa9620231969
Mesaverde Np6420241996
Douglas Pass5220241982
Angora4320241998
Uncompahgre4220241988
Powderhorn4020231994
Baxter Pass3920241994
Mcphee Res.3720241996
Black Sulphur Cr3420242015
Wilson Creek3120241990
Yellowjacket Pass2720241998
Paonia2620241992
Dinosaur2620241995
Castleton2420241988
Doyleville2420241988
Thomasville2420181993
Heeney2320192017
Buffalo Park2220231992
Great Divide2120241974
Moon Pass2020241998
Pagosa Spgs1819821968
Deadman Rd.1820241992
Willow Peak1720211988
Stillwater Pass1720091998
Marshall Pas1620191995

Green-tailed Towhee Population Trend in Other States

arizonacaliforniaidahomontananevadanew-mexicooregontexasutahwyoming

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