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Species · Wyoming · BBS 2026 Release · 1966–2025

Sharp-tailed Grouse Population Trend in Wyoming

All statesGame birds

Sharp-tailed Grouse in Wyoming has surged: up 206% on the route-weighted index since 1984.

+206%Since 1984TrendPercent 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 →
19Routes 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 →
26YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Sharp-tailed Grouse 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 Sharp-tailed Grouse in Wyoming. See the full index history below.

Sharp-tailed Grouse Population Forecast in Wyoming

If the recent trend holds, Sharp-tailed Grouse in Wyoming is projected to fall about 34% by 2030 — from 0.21 in 2025 to a central estimate of 0.14 (95% range 0.00–0.34). A 5-year backtest shows a typical error of ±139.9%, with 100% of held-out values landing inside the 95% band.

-34%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 →
0.14Projected 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 →
0.00–0.3495% 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 →
±139.9%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, Sharp-tailed Grouse in Wyoming is projected to fall about 34% by 2030 — from 0.21 in 2025 to a central estimate of 0.14 (95% range 0.00–0.34). A 5-year backtest shows a typical error of ±139.9%, with 100% of held-out values landing inside the 95% band.19792030
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 →
20260.130.000.34
20270.130.000.34
20280.140.000.34
20290.140.000.34
20300.140.000.34

Sharp-tailed Grouse Survey Routes in Wyoming

Routes recording Sharp-tailed Grouse 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 →
Raven1220252024
Seely 2520162013
Moskee 3420252025
Gvnt Valley320251992
Recluse320041999
Chugwater320242012
Sundance220232001
Dayton220161984
Arvada220012001
Pine Bluff219981998
Wyarno120211979
Clark120022002
Schoonover120001990
Soda Well120192015
Upton120242024
Riverview120252025
Newcastle120242000
Cheyenne119941994
Moskee 2120042004

Sharp-tailed Grouse Population Trend in Other States

alaskacoloradoidahomichiganminnesotamontananebraskanorth-dakotasouth-dakotautahwashingtonwisconsin

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