Species · BCR 10 · BBS 2025 Release · 1966–2024
Merlin In Northern Rockies
Merlin in Northern Rockies has fallen sharply: down 56% on the route-weighted index since 1976.
-56%Since 1976
30Routes In Region
32Years
Notable Signals
No notable trend signals for Merlin in Northern Rockies. See the full index history below.
Forecast
If the recent trend holds, Merlin in Northern Rockies is projected to stay roughly flat through 2029, near 0.00 (95% range 0.00–0.03). A 5-year backtest shows a typical error of ±144.7%, with 80% of held-out values landing inside the 95% band.
n/aChange by 2029
0.00Projected 2029 index
0.00–0.0395% range
±144.7%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.00 | 0.00 | 0.03 |
| 2026 | 0.00 | 0.00 | 0.03 |
| 2027 | 0.00 | 0.00 | 0.03 |
| 2028 | 0.00 | 0.00 | 0.03 |
| 2029 | 0.00 | 0.00 | 0.03 |
Routes In Northern Rockies
| Libby Dam | MONTANA | 2 | 1986 |
| Green River | WYOMING | 2 | 1982 |
| Naples | IDAHO | 1 | 2022 |
| Avery | IDAHO | 1 | 2009 |
| Cascade | IDAHO | 1 | 1972 |
| Burgdorf | IDAHO | 1 | 2015 |
| St Mary | MONTANA | 1 | 1993 |
| Polson | MONTANA | 1 | 1993 |
| Augusta | MONTANA | 1 | 2003 |
| Laurel | MONTANA | 1 | 2004 |
| Pablo Res. | MONTANA | 1 | 2024 |
| St. Mary 2 | MONTANA | 1 | 2024 |
| Glen | MONTANA | 1 | 2008 |
| Willow Creek 2 | MONTANA | 1 | 2000 |
| Heart Butte | MONTANA | 1 | 2024 |
| Philipsburg | MONTANA | 1 | 2016 |
| Eagle Creek | OREGON | 1 | 2005 |
| Keller | WASHINGTON | 1 | 1986 |
| Chewelah | WASHINGTON | 1 | 2017 |
| Cody | WYOMING | 1 | 2012 |
| Basin | WYOMING | 1 | 1974 |
| Bear Creek | WYOMING | 1 | 1989 |
| Patrick Draw | WYOMING | 1 | 1976 |
| Hunter Peak | WYOMING | 1 | 1997 |
| Tensleep | WYOMING | 1 | 2011 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.