Species · BCR 9 · BBS 2025 Release · 1966–2024

Sharp-tailed Grouse In Great Basin

All regions Great Basin Generalists

Sharp-tailed Grouse in Great Basin has collapsed: down 83% on the route-weighted index since 1989.

-83%Since 1989

5Routes In Region

20Years

Notable Signals

long arc declinecomputed index

Sharp-tailed Grouse has collapsed in Great Basin: down 82% on the route-weighted index since 1989.

Forecast

If the recent trend holds, Sharp-tailed Grouse in Great Basin is projected to stay roughly flat through 2023, near 0.00 (95% range 0.00–0.08). A 5-year backtest shows a typical error of ±442%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2023

0.00Projected 2023 index

0.00–0.0895% range

±442%Backtest error

Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.

Year	Projected index	95% low	95% high
2019	0.00	0.00	0.08
2020	0.00	0.00	0.08
2021	0.00	0.00	0.08
2022	0.00	0.00	0.08
2023	0.00	0.00	0.08

Routes In Great Basin

Routes recording Sharp-tailed Grouse in Great Basin.

Ardenvoir	WASHINGTON	4	1969
Blackft Res	IDAHO	2	2001
Johnson Can	UTAH	2	2018
Bates	IDAHO	1	2018
Daniels Res	IDAHO	1	2015

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