Species · BCR 16 · BBS 2025 Release · 1966–2024
Greater Sage-Grouse In Southern Rockies / Colorado Plateau
Greater Sage-Grouse in Southern Rockies / Colorado Plateau has collapsed: down 94% on the route-weighted index since 1974.
-94%Since 1974
21Routes In Region
33Years
Notable Signals
long arc declinecomputed index
Greater Sage-Grouse has collapsed in Southern Rockies / Colorado Plateau: down 93% on the route-weighted index since 1974.
Forecast
If the recent trend holds, Greater Sage-Grouse in Southern Rockies / Colorado Plateau is projected to stay roughly flat through 2028, near 0.00 (95% range 0.00–0.20). A 5-year backtest shows a typical error of ±203.5%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2028
0.00Projected 2028 index
0.00–0.2095% range
±203.5%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2024 | 0.00 | 0.00 | 0.20 |
| 2025 | 0.00 | 0.00 | 0.20 |
| 2026 | 0.00 | 0.00 | 0.20 |
| 2027 | 0.00 | 0.00 | 0.20 |
| 2028 | 0.00 | 0.00 | 0.20 |
Routes In Southern Rockies / Colorado Plateau
| M Warner Res | UTAH | 6 | 2013 |
| Yellowjacket Pass | COLORADO | 5 | 2018 |
| Black Sulphur Cr | COLORADO | 5 | 2022 |
| Willow Creek | UTAH | 4 | 1998 |
| Walden | COLORADO | 2 | 2017 |
| Ant Flat-Ogden Can | UTAH | 2 | 2023 |
| Vernal | UTAH | 2 | 2018 |
| Lost Cr. Res | UTAH | 2 | 2012 |
| Warbonnet | WYOMING | 2 | 2012 |
| Wilson Creek | COLORADO | 1 | 2016 |
| Buffalo Park | COLORADO | 1 | 2013 |
| Dinosaur | COLORADO | 1 | 2016 |
| Altonah | UTAH | 1 | 1982 |
| Bonanza | UTAH | 1 | 1996 |
| Moon Lake | UTAH | 1 | 2003 |
| Dixie Nf | UTAH | 1 | 2016 |
| Heber Mtn. | UTAH | 1 | 2023 |
| Moon Lake 2 | UTAH | 1 | 2019 |
| Alton | UTAH | 1 | 2010 |
| Brookhurst | WYOMING | 1 | 2010 |
| Sybille Cyn | WYOMING | 1 | 2015 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.