Species · BCR 32 · BBS 2025 Release · 1966–2024
Mountain Bluebird In Coastal California
Mountain Bluebird in Coastal California has collapsed: down 86% on the route-weighted index since 1971.
-86%Since 1971
8Routes In Region
15Years
Notable Signals
long arc declinecomputed index
Mountain Bluebird has collapsed in Coastal California: down 86% on the route-weighted index since 1971.
Routes In Coastal California
| Oneals | CALIFORNIA | 2 | 2015 |
| Alamar | CALIFORNIA | 2 | 1997 |
| Yokohl Val | CALIFORNIA | 1 | 1973 |
| Big Bear | CALIFORNIA | 1 | 1980 |
| Sawmill Mtn | CALIFORNIA | 1 | 1971 |
| Green Valley | CALIFORNIA | 1 | 1998 |
| Ventucopa | CALIFORNIA | 1 | 1997 |
| Jacumba | CALIFORNIA | 1 | 1976 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.