Species · BCR 4 · BBS 2025 Release · 1966–2024
Rough-legged Hawk In BCR 4
Rough-legged Hawk in BCR 4 has held roughly steady: down 4% on the route-weighted index since 1993.
-4%Since 1993
14Routes In Region
23Years
Notable Signals
No notable trend signals for Rough-legged Hawk in BCR 4. See the full index history below.
Forecast
If the recent trend holds, Rough-legged Hawk in BCR 4 is projected to stay roughly flat through 2029, near 0.06 (95% range 0.00–0.14). A 5-year backtest shows a typical error of ±150.1%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2029
0.06Projected 2029 index
0.00–0.1495% range
±150.1%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.06 | 0.00 | 0.14 |
| 2026 | 0.06 | 0.00 | 0.14 |
| 2027 | 0.06 | 0.00 | 0.14 |
| 2028 | 0.06 | 0.00 | 0.14 |
| 2029 | 0.06 | 0.00 | 0.14 |
Routes In BCR 4
| Unalakleet River | ALASKA | 3 | 2017 |
| Chatanika R | ALASKA | 2 | 2008 |
| Sourdough | ALASKA | 1 | 2023 |
| Bear Creek | ALASKA | 1 | 1991 |
| Savage | ALASKA | 1 | 2017 |
| Coldfoot | ALASKA | 1 | 2017 |
| Hather Creek | ALASKA | 1 | 2011 |
| Kanuti Canyn | ALASKA | 1 | 1993 |
| Koyukuk Riv. | ALASKA | 1 | 1993 |
| Cottonwood | ALASKA | 1 | 1987 |
| Mud River | ALASKA | 1 | 2021 |
| Delta | ALASKA | 1 | 2001 |
| Anvik River | ALASKA | 1 | 2023 |
| Kuskulana | ALASKA | 1 | 2024 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.