Species · BCR 4 · BBS 2025 Release · 1966–2024
Bald Eagle In BCR 4
Bald Eagle in BCR 4 has increased: up 31% on the route-weighted index since 1983.
+31%Since 1983
46Routes In Region
42Years
Notable Signals
No notable trend signals for Bald Eagle in BCR 4. See the full index history below.
Forecast
If the recent trend holds, Bald Eagle in BCR 4 is projected to stay roughly flat through 2029, near 0.53 (95% range 0.13–0.93). A 5-year backtest shows a typical error of ±17.9%, with 100% of held-out values landing inside the 95% band.
+1%Change by 2029
0.53Projected 2029 index
0.13–0.9395% range
±17.9%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.51 | 0.11 | 0.91 |
| 2026 | 0.52 | 0.12 | 0.92 |
| 2027 | 0.52 | 0.12 | 0.92 |
| 2028 | 0.53 | 0.13 | 0.93 |
| 2029 | 0.53 | 0.13 | 0.93 |
Routes In BCR 4
| Kuskulana | ALASKA | 5 | 2022 |
| Slana | ALASKA | 4 | 2024 |
| Kachemak | ALASKA | 4 | 2024 |
| Kalifonsky | ALASKA | 3 | 2022 |
| Bear Creek | ALASKA | 3 | 1986 |
| Birch Lake | ALASKA | 2 | 2024 |
| Swan Lake Rd | ALASKA | 2 | 2003 |
| Burma Road | ALASKA | 2 | 2007 |
| Hather Creek | ALASKA | 2 | 2021 |
| Mcgrath | ALASKA | 2 | 1998 |
| Anvik River | ALASKA | 2 | 2024 |
| Kanuti Lake | ALASKA | 2 | 2024 |
| Circle | ALASKA | 1 | 2019 |
| Tower Bluffs | ALASKA | 1 | 2008 |
| Chistochina | ALASKA | 1 | 2024 |
| Northway | ALASKA | 1 | 2018 |
| Maclaren | ALASKA | 1 | 2011 |
| Monahan | ALASKA | 1 | 2021 |
| Cantwell | ALASKA | 1 | 2018 |
| Goose Bay | ALASKA | 1 | 1976 |
| Skilak Lake | ALASKA | 1 | 1983 |
| Willow | ALASKA | 1 | 1993 |
| Kenny Lake | ALASKA | 1 | 2024 |
| Sourdough | ALASKA | 1 | 2018 |
| Tonsina | ALASKA | 1 | 2017 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.