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Species · Wyoming · BBS 2026 Release · 1966–2025

Spotted Towhee Population Trend in Wyoming

All statesForest birds

Spotted Towhee in Wyoming has surged: up 138% on the route-weighted index since 1970.

+138%Since 1970TrendPercent 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 →
71Routes 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 →
57YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Spotted Towhee 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 →

Spotted Towhee has surged in Wyoming: up 138% on the route-weighted index since 1970.

Spotted Towhee Population Forecast in Wyoming

If the recent trend holds, Spotted Towhee in Wyoming is projected to rise about 33% by 2030 — from 1.5 in 2025 to a central estimate of 2.0 (95% range 1.3–2.7). A 5-year backtest shows a typical error of ±55.8%, with 40% of held-out values landing inside the 95% band.

+33%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 →
2.0Projected 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 →
1.3–2.795% 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 →
±55.8%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, Spotted Towhee in Wyoming is projected to rise about 33% by 2030 — from 1.5 in 2025 to a central estimate of 2.0 (95% range 1.3–2.7). A 5-year backtest shows a typical error of ±55.8%, with 40% 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 →
20261.91.22.7
20271.91.22.7
20282.01.22.7
20292.01.22.7
20302.01.32.7

Spotted Towhee Survey Routes in Wyoming

Routes recording Spotted Towhee 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 →
Wyarno2920251974
Moskee 22920212002
Moskee 32420252022
Moskee2020011980
Sundance1320251975
Sybille Cyn1320251997
Fletcher Pk1120251982
Recluse720161991
Crowheart720211987
Ethete720251991
Lovell520251992
Gebo520251995
Basin420241995
Dwyer420251992
Savery 2420252017
Seely 2320252002
Gvnt Valley320251996
Clark320251990
Meeteetse320251996
Tensleep320242015
Dayton320241980
Seely320001990
Fox Park320232014
Glenrock219761969
Crazy Woman220241982

Spotted Towhee Population Trend in Other States

arizonacaliforniacoloradoidahokansasmontananebraskanevadanew-mexiconorth-dakotaoklahomaoregonsouth-dakotatexasutahwashington

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