Species · Wisconsin · BBS 2025 Release · 1966–2024
Cerulean Warbler Population Trend in Wisconsin
Cerulean Warbler in Wisconsin has edged up: up 11% on the route-weighted index since 1970.
+11%Since 1970
25Routes In State
43Years
Notable Cerulean Warbler Trends in Wisconsin
No notable trend signals for Cerulean Warbler in Wisconsin. See the full index history below.
Cerulean Warbler Population Forecast in Wisconsin
If the recent trend holds, Cerulean Warbler in Wisconsin is projected to stay roughly flat through 2029, near 0.02 (95% range 0.00–0.06). A 5-year backtest shows a typical error of ±100.4%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2029
0.02Projected 2029 index
0.00–0.0695% range
±100.4%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.02 | 0.00 | 0.06 |
| 2026 | 0.02 | 0.00 | 0.06 |
| 2027 | 0.02 | 0.00 | 0.06 |
| 2028 | 0.02 | 0.00 | 0.06 |
| 2029 | 0.02 | 0.00 | 0.06 |
Cerulean Warbler Survey Routes in Wisconsin
| Eagle River | 3 | 1995 | 1995 |
| Rolling Pr | 2 | 1976 | 1976 |
| Chaffey | 1 | 1997 | 1997 |
| Grand View | 1 | 2003 | 1972 |
| Montreal | 1 | 1984 | 1984 |
| Loraine | 1 | 1996 | 1968 |
| Couderay | 1 | 1999 | 1994 |
| Holway | 1 | 1989 | 1989 |
| Crandon | 1 | 1997 | 1997 |
| Amberg | 1 | 1999 | 1999 |
| Esdaile | 1 | 2019 | 1974 |
| Cochrane | 1 | 1977 | 1977 |
| Hatfield | 1 | 1973 | 1973 |
| Mather | 1 | 1988 | 1973 |
| Elderon | 1 | 1996 | 1996 |
| Saxeville | 1 | 1991 | 1989 |
| Oconto Falls | 1 | 1975 | 1970 |
| Newburg Crns | 1 | 2021 | 2021 |
| Viroqua | 1 | 1988 | 1988 |
| Rolling Grnd | 1 | 1996 | 1982 |
| N Freedom | 1 | 2024 | 1976 |
| Pardeeville | 1 | 2005 | 2005 |
| Prairie Du Chien | 1 | 2023 | 2001 |
| Paris | 1 | 1967 | 1967 |
| Raymond | 1 | 2015 | 1972 |
Cerulean Warbler Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.