Species · BCR 2 · BBS 2025 Release · 1966–2024
Common Loon In BCR 2
Common Loon in BCR 2 has surged: up 89% on the route-weighted index since 1988.
+89%Since 1988
14Routes In Region
36Years
Notable Signals
long arc increasecomputed index
Common Loon has surged in BCR 2: up 88% on the route-weighted index since 1988.
Forecast
If the recent trend holds, Common Loon in BCR 2 is projected to fall about 63% by 2029 — from 1.6 in 2024 to a central estimate of 0.58 (95% range 0.00–1.4). A 5-year backtest shows a typical error of ±50%, with 80% of held-out values landing inside the 95% band.
-63%Change by 2029
0.58Projected 2029 index
0.00–1.495% range
±50%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.58 | 0.00 | 1.4 |
| 2026 | 0.58 | 0.00 | 1.4 |
| 2027 | 0.58 | 0.00 | 1.4 |
| 2028 | 0.58 | 0.00 | 1.4 |
| 2029 | 0.58 | 0.00 | 1.4 |
Routes In BCR 2
| Cape Nome | ALASKA | 9 | 2024 |
| Dillingham | ALASKA | 5 | 2019 |
| Cold Bay (Short) | ALASKA | 4 | 1992 |
| King Salmon | ALASKA | 3 | 2023 |
| Cold Bay | ALASKA | 2 | 2024 |
| Katmai N.P. | ALASKA | 1 | 2019 |
| Chiniak | ALASKA | 1 | 2024 |
| Kodiak 2 | ALASKA | 1 | 2024 |
| Council | ALASKA | 1 | 2024 |
| Nome | ALASKA | 1 | 2003 |
| St. Mary'S | ALASKA | 1 | 2014 |
| Togiak River | ALASKA | 1 | 2005 |
| Gweek River | ALASKA | 1 | 1998 |
| Goodnews Bay | ALASKA | 1 | 2002 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.