Species · Montana · BBS 2025 Release · 1966–2024
Dusky Flycatcher Population Trend in Montana
Dusky Flycatcher in Montana has surged: up 538% on the route-weighted index since 1970.
+538%Since 1970
64Routes In State
56Years
Notable Dusky Flycatcher Trends in Montana
long arc increasecomputed index
Dusky Flycatcher has surged in Montana: up 538% on the route-weighted index since 1970.
Dusky Flycatcher Population Forecast in Montana
If the recent trend holds, Dusky Flycatcher in Montana is projected to rise about 61% by 2029 — from 2.0 in 2024 to a central estimate of 3.2 (95% range 1.7–4.7). A 5-year backtest shows a typical error of ±78.1%, with 20% of held-out values landing inside the 95% band.
+61%Change by 2029
3.2Projected 2029 index
1.7–4.795% range
±78.1%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 3.0 | 1.5 | 4.5 |
| 2026 | 3.1 | 1.6 | 4.6 |
| 2027 | 3.1 | 1.6 | 4.6 |
| 2028 | 3.1 | 1.6 | 4.7 |
| 2029 | 3.2 | 1.7 | 4.7 |
Dusky Flycatcher Survey Routes in Montana
| Maynard Coulee | 40 | 2024 | 2017 |
| Fish Creek | 32 | 2024 | 1995 |
| Boulder | 9 | 2024 | 1970 |
| Clancy | 9 | 2023 | 2015 |
| Sula | 8 | 2024 | 1986 |
| Fort Logan | 7 | 2024 | 2018 |
| Logan Pass | 6 | 2024 | 1980 |
| Threemile Wa | 6 | 2024 | 1994 |
| St Regis | 5 | 2024 | 1977 |
| Pryor Mtn. | 5 | 2024 | 2001 |
| Swan Lake | 5 | 2021 | 2021 |
| Wise River | 5 | 2024 | 1993 |
| Inside Road | 4 | 2024 | 1990 |
| Chestnut | 4 | 2024 | 1968 |
| Red Rock | 4 | 2024 | 1980 |
| East Glacier Park | 4 | 2024 | 2015 |
| Freeman Creek | 4 | 2016 | 2015 |
| Cramer Creek | 3 | 2019 | 2004 |
| Arlee | 3 | 2024 | 1984 |
| Greenoagh 3 | 3 | 2019 | 2017 |
| Thompson Riv | 3 | 2022 | 1993 |
| Hebgen Lake | 3 | 2024 | 2017 |
| Lima | 3 | 2024 | 1994 |
| Noxon | 3 | 2023 | 1995 |
| Libby Dam | 2 | 2024 | 1979 |
Dusky Flycatcher Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.