Species · BCR 2 · BBS 2025 Release · 1966–2024
American Dipper In BCR 2
American Dipper in BCR 2 has collapsed: down 79% on the route-weighted index since 1988.
-79%Since 1988
8Routes In Region
15Years
Notable Signals
long arc declinecomputed index
American Dipper has collapsed in BCR 2: down 79% on the route-weighted index since 1988.
Routes In BCR 2
| Kodiak | ALASKA | 1 | 1983 |
| Chiniak | ALASKA | 1 | 1988 |
| Dillingham | ALASKA | 1 | 2001 |
| Cold Bay | ALASKA | 1 | 2023 |
| Kodiak 2 | ALASKA | 1 | 1994 |
| Council | ALASKA | 1 | 2017 |
| Togiak River | ALASKA | 1 | 1999 |
| Kanektok Riv | ALASKA | 1 | 2001 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.