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

Spotted Towhee Population Trend in Wyoming

All statesGeneralists

Spotted Towhee in Wyoming has surged: up 125% on the route-weighted index since 1970.

+125%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 →
70Routes 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 →
56YearsYears 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 125% 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 62% by 2029 — from 1.2 in 2024 to a central estimate of 2.0 (95% range 1.3–2.8). A 5-year backtest shows a typical error of ±55.5%, with 40% of held-out values landing inside the 95% band.

+62%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 →
2.0Projected 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 →
1.3–2.895% 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 →
±55.5%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 62% by 2029 — from 1.2 in 2024 to a central estimate of 2.0 (95% range 1.3–2.8). A 5-year backtest shows a typical error of ±55.5%, with 40% 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 →
20251.91.22.7
20261.91.22.7
20272.01.22.7
20282.01.32.7
20292.01.32.8

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 →
Moskee 22920212002
Moskee 32120242022
Moskee2020011980
Clark1320241990
Fletcher Pk1120241982
Wyarno920241974
Recluse720161991
Crowheart720211987
Otto620241983
Sundance620241975
Ethete520241991
Meadowdale519951984
Sybille Cyn520241997
Basin420241995
Dwyer320081992
Lovell320241992
Tensleep320242015
Dayton320241980
Schoonover320231998
Seely320001990
Gebo320241995
Fox Park320232014
Dubois220241968
Glenrock219761969
Seely 2220222002

Spotted Towhee Population Trend in Other States

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