Species · BCR 4 · BBS 2025 Release · 1966–2024
Rusty Blackbird In BCR 4
Rusty Blackbird in BCR 4 has edged down: down 15% on the route-weighted index since 1983.
-15%Since 1983
46Routes In Region
43Years
Notable Signals
No notable trend signals for Rusty Blackbird in BCR 4. See the full index history below.
Forecast
If the recent trend holds, Rusty Blackbird in BCR 4 is projected to rise about 23% by 2029 — from 0.69 in 2024 to a central estimate of 0.85 (95% range 0.10–1.6). A 5-year backtest shows a typical error of ±45.2%, with 100% of held-out values landing inside the 95% band.
+23%Change by 2029
0.85Projected 2029 index
0.10–1.695% range
±45.2%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.86 | 0.11 | 1.6 |
| 2026 | 0.86 | 0.11 | 1.6 |
| 2027 | 0.86 | 0.10 | 1.6 |
| 2028 | 0.85 | 0.10 | 1.6 |
| 2029 | 0.85 | 0.10 | 1.6 |
Routes In BCR 4
| Bear Creek | ALASKA | 14 | 1991 |
| Burma Road | ALASKA | 12 | 2018 |
| Hather Creek | ALASKA | 7 | 2024 |
| Slana | ALASKA | 5 | 2024 |
| Northway | ALASKA | 5 | 2022 |
| Wasilla | ALASKA | 4 | 1983 |
| Kobuk River (Short) | ALASKA | 4 | 1991 |
| Mcgrath | ALASKA | 3 | 2018 |
| Mud River | ALASKA | 3 | 2024 |
| Anvik River | ALASKA | 3 | 2023 |
| Mccarthy Rd2 | ALASKA | 3 | 2024 |
| Circle | ALASKA | 2 | 2017 |
| Monahan | ALASKA | 2 | 2015 |
| Chena Hot Sp | ALASKA | 2 | 1990 |
| Koyukuk Riv. | ALASKA | 2 | 2001 |
| Murphy Dome | ALASKA | 2 | 1998 |
| Ft. Richrdsn | ALASKA | 2 | 2010 |
| Tatalina | ALASKA | 2 | 2017 |
| Birch Lake | ALASKA | 1 | 2021 |
| Tower Bluffs | ALASKA | 1 | 2019 |
| Chistochina | ALASKA | 1 | 2023 |
| Cantwell | ALASKA | 1 | 1986 |
| Goose Bay | ALASKA | 1 | 1976 |
| Skilak Lake | ALASKA | 1 | 1984 |
| Homer | ALASKA | 1 | 1982 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.