Species · Montana · BBS 2025 Release · 1966–2024
Loggerhead Shrike Population Trend in Montana
Loggerhead Shrike in Montana has declined: down 27% on the route-weighted index since 1970.
-27%Since 1970
55Routes In State
56Years
Notable Loggerhead Shrike Trends in Montana
No notable trend signals for Loggerhead Shrike in Montana. See the full index history below.
Loggerhead Shrike Population Forecast in Montana
If the recent trend holds, Loggerhead Shrike in Montana is projected to fall about 43% by 2029 — from 1.0 in 2024 to a central estimate of 0.58 (95% range 0.07–1.1). A 5-year backtest shows a typical error of ±27.4%, with 100% of held-out values landing inside the 95% band.
-43%Change by 2029
0.58Projected 2029 index
0.07–1.195% range
±27.4%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.59 | 0.07 | 1.1 |
| 2026 | 0.58 | 0.07 | 1.1 |
| 2027 | 0.58 | 0.07 | 1.1 |
| 2028 | 0.58 | 0.07 | 1.1 |
| 2029 | 0.58 | 0.07 | 1.1 |
Loggerhead Shrike Survey Routes in Montana
| Savage | 9 | 2021 | 1968 |
| Lambert | 9 | 2024 | 2021 |
| Lindsay | 8 | 2024 | 2015 |
| Glasgow | 6 | 2024 | 1968 |
| Oswego | 6 | 2024 | 1978 |
| Brusett | 6 | 2024 | 1982 |
| Ingomar | 6 | 2024 | 1970 |
| Wheat Basin | 6 | 2024 | 2017 |
| Circle | 5 | 2023 | 1969 |
| Whitlash | 5 | 2024 | 2009 |
| Virgelle | 4 | 2024 | 1979 |
| Jordan | 4 | 2024 | 1968 |
| Winnett | 4 | 2023 | 2017 |
| Malta | 3 | 2023 | 1977 |
| Redstone | 3 | 2024 | 1972 |
| Chinook | 3 | 2024 | 2015 |
| Saco | 3 | 2024 | 2016 |
| Cabin Creek | 3 | 2024 | 2018 |
| Flatwillow 2 | 2 | 2021 | 2014 |
| Sunburst | 2 | 2006 | 1973 |
| Harlem | 2 | 2018 | 1968 |
| Greenough | 2 | 1996 | 1996 |
| Powderville | 2 | 2024 | 1970 |
| Custer 2 | 2 | 2024 | 2024 |
| Gildford | 2 | 2019 | 2015 |
Loggerhead Shrike Population Trend in Other States
alabamaarizonaarkansascaliforniacoloradofloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmichiganminnesotamississippimissourinebraskanevadanew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniasouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.