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

Greater Sage-Grouse Population Trend in Nevada

All statesGeneralists

Greater Sage-Grouse in Nevada has declined: down 39% on the route-weighted index since 1970.

-39%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 →
17Routes 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 →
36YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Greater Sage-Grouse Trends in NevadaNotable 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 Greater Sage-Grouse in Nevada. See the full index history below.

Greater Sage-Grouse Population Forecast in Nevada

If the recent trend holds, Greater Sage-Grouse in Nevada is projected to fall about 85% by 2029 — from 1.0 in 2024 to a central estimate of 0.15 (95% range 0.00–1.4). A 5-year backtest shows a typical error of ±86.3%, with 100% of held-out values landing inside the 95% band.

-85%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 →
0.15Projected 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 →
0.00–1.495% 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 →
±86.3%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, Greater Sage-Grouse in Nevada is projected to fall about 85% by 2029 — from 1.0 in 2024 to a central estimate of 0.15 (95% range 0.00–1.4). A 5-year backtest shows a typical error of ±86.3%, with 100% 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 →
20250.240.001.5
20260.220.001.5
20270.200.001.5
20280.170.001.5
20290.150.001.4

Greater Sage-Grouse Survey Routes in Nevada

Routes recording Greater Sage-Grouse in Nevada.
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 →
Eureka2420241992
Calico Spr1819741969
Sheldon Nwr1220182009
Austin720122012
Dobbin Creek720171968
Bald Mtn.520141992
Majors Place519891969
Dinner Sta319921969
Illipah320181970
Toiyabe Nf220241991
Midas120031991
Ranchogrande120091996
Humboldt Nf120122005
Walker Can119831983
Charleston Reservoir120242024
Humboldt Nf 2120242024
Minerva120222022

Greater Sage-Grouse Population Trend in Other States

californiacoloradoidahomontananorth-dakotaoregonsouth-dakotautahwyoming

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