Species · BCR 10 · BBS 2025 Release · 1966–2024
American Goshawk In Northern Rockies
American Goshawk in Northern Rockies has fallen sharply: down 69% on the route-weighted index since 1970.
-69%Since 1970
72Routes In Region
51Years
Notable Signals
long arc declinecomputed index
American Goshawk has fallen sharply in Northern Rockies: down 69% on the route-weighted index since 1970.
Forecast
If the recent trend holds, American Goshawk in Northern Rockies is projected to stay roughly flat through 2028, near 0.01 (95% range 0.00–0.06). A 5-year backtest shows a typical error of ±85%, with 80% of held-out values landing inside the 95% band.
n/aChange by 2028
0.01Projected 2028 index
0.00–0.0695% range
±85%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2024 | 0.01 | 0.00 | 0.06 |
| 2025 | 0.01 | 0.00 | 0.06 |
| 2026 | 0.01 | 0.00 | 0.06 |
| 2027 | 0.01 | 0.00 | 0.06 |
| 2028 | 0.01 | 0.00 | 0.06 |
Routes In Northern Rockies
| Greenough | MONTANA | 3 | 2000 |
| Libby Dam | MONTANA | 2 | 1990 |
| St Mary | MONTANA | 2 | 1971 |
| Polson | MONTANA | 2 | 1991 |
| Pagil Gulch | MONTANA | 2 | 2022 |
| Unity | OREGON | 2 | 1999 |
| Eagle Creek | OREGON | 2 | 2022 |
| Alpine | WYOMING | 2 | 2012 |
| Wilson | WYOMING | 2 | 1985 |
| Green River | WYOMING | 2 | 1981 |
| Mivoden | IDAHO | 1 | 1984 |
| Cape Horn | IDAHO | 1 | 2012 |
| Centerville | IDAHO | 1 | 2019 |
| Coolin | IDAHO | 1 | 2007 |
| Cabarton | IDAHO | 1 | 1993 |
| Sawtooth Cty | IDAHO | 1 | 1997 |
| Marble Creek | IDAHO | 1 | 1990 |
| Salmon River | IDAHO | 1 | 1996 |
| Cobalt | IDAHO | 1 | 1989 |
| Yellow Pine | IDAHO | 1 | 2004 |
| Sunbeam | IDAHO | 1 | 2019 |
| Sawtooth City 2 | IDAHO | 1 | 2018 |
| St Regis | MONTANA | 1 | 2001 |
| Arlee | MONTANA | 1 | 2011 |
| Woodman | MONTANA | 1 | 2005 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.