BirdAnalyst
Species · BCR 10 · BBS 2025 Release · 1966–2024

Greater Sage-Grouse In Northern Rockies

All regionsNorthern RockiesGeneralists

Greater Sage-Grouse in Northern Rockies has collapsed: down 78% on the route-weighted index since 1970.

-78%Since 1970
67Routes In Region
56Years

Notable Signals

long arc declinecomputed index

Greater Sage-Grouse has collapsed in Northern Rockies: down 78% on the route-weighted index since 1970.

Forecast

If the recent trend holds, Greater Sage-Grouse in Northern Rockies is projected to fall about 82% by 2029 — from 0.76 in 2024 to a central estimate of 0.14 (95% range 0.00–1.3). A 5-year backtest shows a typical error of ±139.1%, with 100% of held-out values landing inside the 95% band.

-82%Change by 2029
0.14Projected 2029 index
0.00–1.395% range
±139.1%Backtest error
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 index95% low95% high
20250.220.001.4
20260.200.001.3
20270.180.001.3
20280.160.001.3
20290.140.001.3

Routes In Northern Rockies

Routes recording Greater Sage-Grouse in Northern Rockies.
BoulderWYOMING432012
Bear CreekWYOMING282024
Big SandyWYOMING202018
Elk HornWYOMING172018
FrannieWYOMING172023
ArmintoWYOMING142024
SeedskadeeWYOMING142015
BairoilWYOMING132024
RyegrassWYOMING122024
DiamondvilleWYOMING111981
Patrick Draw 6WYOMING112024
ShirleyWYOMING92006
Patrick Draw 2WYOMING91981
RelianceWYOMING81981
Patrick Draw 5WYOMING72009
NowoodWYOMING62024
RiversideWYOMING61971
Sand DrawWYOMING62024
BeaverheadMONTANA51988
RandolphUTAH52013
Saleratus CrUTAH52018
MeeteetseWYOMING52019
SweetwaterWYOMING52009
Black Rock 2WYOMING52024
GeboWYOMING42019

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