Species · BCR 12 · BBS 2025 Release · 1966–2024
Cerulean Warbler In Boreal Hardwood Transition
Cerulean Warbler in Boreal Hardwood Transition has declined: down 34% on the route-weighted index since 1994.
-34%Since 1994
10Routes In Region
12Years
Notable Signals
No notable trend signals for Cerulean Warbler in Boreal Hardwood Transition. See the full index history below.
Routes In Boreal Hardwood Transition
| Eagle River | WISCONSIN | 3 | 1995 |
| Isabella | MICHIGAN | 1 | 2008 |
| Sand Lake | MICHIGAN | 1 | 2021 |
| Tamarac Nwr | MINNESOTA | 1 | 2003 |
| Chaffey | WISCONSIN | 1 | 1997 |
| Grand View | WISCONSIN | 1 | 2003 |
| Montreal | WISCONSIN | 1 | 1984 |
| Couderay | WISCONSIN | 1 | 1999 |
| Crandon | WISCONSIN | 1 | 1997 |
| Amberg | WISCONSIN | 1 | 1999 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.