Species · Wisconsin · BBS 2025 Release · 1966–2024
Palm Warbler Population Trend in Wisconsin
Palm Warbler in Wisconsin has declined: down 32% on the route-weighted index since 1971.
-32%Since 1971
14Routes In State
42Years
Notable Palm Warbler Trends in Wisconsin
No notable trend signals for Palm Warbler in Wisconsin. See the full index history below.
Palm Warbler Population Forecast in Wisconsin
If the recent trend holds, Palm Warbler in Wisconsin is projected to stay roughly flat through 2029, near 0.03 (95% range 0.00–0.06). A 5-year backtest shows a typical error of ±86.7%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2029
0.03Projected 2029 index
0.00–0.0695% range
±86.7%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.03 | 0.00 | 0.06 |
| 2026 | 0.03 | 0.00 | 0.06 |
| 2027 | 0.03 | 0.00 | 0.06 |
| 2028 | 0.03 | 0.00 | 0.06 |
| 2029 | 0.03 | 0.00 | 0.06 |
Palm Warbler Survey Routes in Wisconsin
| Minong | 2 | 2005 | 1974 |
| Shanagolden | 2 | 1996 | 1986 |
| Rhinelander | 2 | 2017 | 1999 |
| Chaffey | 1 | 2007 | 1997 |
| Montreal | 1 | 1978 | 1969 |
| Land O Lakes | 1 | 2003 | 1990 |
| Loraine | 1 | 1998 | 1998 |
| Land O' Lakes 2 | 1 | 2021 | 2019 |
| Couderay | 1 | 2009 | 2000 |
| Phillips | 1 | 1971 | 1971 |
| Rib Lake | 1 | 2011 | 2011 |
| Cavour | 1 | 2006 | 2006 |
| Mcnaughton | 1 | 2005 | 1995 |
| Eagle River | 1 | 2024 | 1968 |
Palm Warbler Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.