Species · Idaho · BBS 2025 Release · 1966–2024
American Goshawk Population Trend in Idaho
American Goshawk in Idaho has collapsed: down 77% on the route-weighted index since 1984.
-77%Since 1984
18Routes In State
20Years
Notable American Goshawk Trends in Idaho
long arc declinecomputed index
American Goshawk has collapsed in Idaho: down 77% on the route-weighted index since 1984.
American Goshawk Population Forecast in Idaho
If the recent trend holds, American Goshawk in Idaho is projected to fall about 100% by 2024 — from 0.05 in 2019 to a central estimate of 0.00 (95% range 0.00–0.11). A 5-year backtest shows a typical error of ±267.6%, with 60% of held-out values landing inside the 95% band.
-100%Change by 2024
0.00Projected 2024 index
0.00–0.1195% range
±267.6%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2020 | 0.00 | 0.00 | 0.11 |
| 2021 | 0.00 | 0.00 | 0.11 |
| 2022 | 0.00 | 0.00 | 0.11 |
| 2023 | 0.00 | 0.00 | 0.11 |
| 2024 | 0.00 | 0.00 | 0.11 |
American Goshawk Survey Routes in Idaho
| Blacks Creek | 2 | 1973 | 1973 |
| Mivoden | 1 | 1984 | 1982 |
| Silver City | 1 | 2007 | 2007 |
| Preston | 1 | 1989 | 1989 |
| Sawtooth City 2 | 1 | 2018 | 2016 |
| Marble Creek | 1 | 1990 | 1990 |
| Cape Horn | 1 | 2012 | 2012 |
| Joel | 1 | 1989 | 1989 |
| Cabarton | 1 | 1993 | 1993 |
| Salmon River | 1 | 1996 | 1996 |
| Centerville | 1 | 2019 | 1973 |
| Cobalt | 1 | 1989 | 1989 |
| Yellow Pine | 1 | 2004 | 1998 |
| Sunbeam | 1 | 2019 | 1995 |
| Sawtooth Cty | 1 | 1997 | 1997 |
| Magic Mtn | 1 | 2017 | 1994 |
| Coolin | 1 | 2007 | 2007 |
| Dougal Res | 1 | 2003 | 2003 |
American Goshawk Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.