BirdAnalyst
Species · Wyoming · BBS 2026 Release · 1966–2025

Townsend's Solitaire Population Trend in Wyoming

All statesForest birds

Townsend's Solitaire in Wyoming has declined: down 32% on the route-weighted index since 1975.

-32%Since 1975TrendPercent 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 →
42Routes 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 →
52YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Townsend's Solitaire 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 →

No notable trend signals for Townsend's Solitaire in Wyoming. See the full index history below.

Townsend's Solitaire Population Forecast in Wyoming

If the recent trend holds, Townsend's Solitaire in Wyoming is projected to rise about 32% by 2030 — from 0.28 in 2025 to a central estimate of 0.37 (95% range 0.00–0.81). A 5-year backtest shows a typical error of ±113.4%, with 100% of held-out values landing inside the 95% band.

+32%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 →
0.37Projected 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 →
0.00–0.8195% 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 →
±113.4%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, Townsend's Solitaire in Wyoming is projected to rise about 32% by 2030 — from 0.28 in 2025 to a central estimate of 0.37 (95% range 0.00–0.81). A 5-year backtest shows a typical error of ±113.4%, with 100% of held-out values landing inside the 95% band.19712030
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 →
20260.370.000.81
20270.370.000.81
20280.370.000.81
20290.370.000.81
20300.370.000.81

Townsend's Solitaire Survey Routes in Wyoming

Routes recording Townsend's Solitaire 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 →
Moskee920011980
Prior Flats820252004
Crazy Woman820241980
Sundance620251975
Savery319931993
Fox Park320252013
Dubois220211974
Hunter Peak220251986
Bald Mtn220221991
Warbonnet220251992
Moskee 2220212002
Savery 2220252008
Ne Entrance120241991
Cody120082008
Hayden Val119851985
Yellowstone120031987
Bill120002000
Brookhurst120091975
Seely 2120042004
Gvnt Valley120041996
Riverside120181971
Buford120252017
Mammoth120251983
Moose120191992
Meeteetse120102010

Townsend's Solitaire Population Trend in Other States

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