Species · Wisconsin · BBS 2025 Release · 1966–2024
Merlin Population Trend in Wisconsin
Merlin in Wisconsin has surged: up 108% on the route-weighted index since 1995.
+108%Since 1995
27Routes In State
23Years
Notable Merlin Trends in Wisconsin
No notable trend signals for Merlin in Wisconsin. See the full index history below.
Merlin Population Forecast in Wisconsin
If the recent trend holds, Merlin in Wisconsin is projected to stay roughly flat through 2029, near 0.05 (95% range 0.01–0.09). A 5-year backtest shows a typical error of ±47.3%, with 60% of held-out values landing inside the 95% band.
n/aChange by 2029
0.05Projected 2029 index
0.01–0.0995% range
±47.3%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.04 | 0.00 | 0.09 |
| 2026 | 0.04 | 0.00 | 0.09 |
| 2027 | 0.05 | 0.01 | 0.09 |
| 2028 | 0.05 | 0.01 | 0.09 |
| 2029 | 0.05 | 0.01 | 0.09 |
Merlin Survey Routes in Wisconsin
| Irma | 3 | 2010 | 2010 |
| Chaffey | 2 | 2022 | 2006 |
| Shanagolden | 2 | 2007 | 1995 |
| Eagle River | 2 | 2021 | 2013 |
| Manawa | 2 | 2021 | 2021 |
| Amnicon Falls | 2 | 2023 | 2023 |
| Manitowoc | 2 | 2014 | 2012 |
| Cavour | 2 | 2019 | 2016 |
| Iron River | 1 | 2023 | 1993 |
| Grand View | 1 | 2018 | 2013 |
| Bayfield | 1 | 2023 | 2012 |
| Land O Lakes | 1 | 2016 | 2016 |
| Couderay | 1 | 2007 | 2007 |
| Phillips | 1 | 2019 | 1974 |
| Merrill | 1 | 2024 | 2024 |
| Wausaukee | 1 | 2019 | 2019 |
| Washington I | 1 | 2022 | 2007 |
| Gilmanton | 1 | 2021 | 2021 |
| Trempealeau | 1 | 2021 | 2021 |
| Cadott | 1 | 2015 | 2015 |
| Mellen | 1 | 2024 | 2024 |
| Clintonville | 1 | 2023 | 2023 |
| Conover | 1 | 2022 | 2017 |
| Bashaw | 1 | 2011 | 2010 |
| Rhinelander | 1 | 2014 | 2014 |
Merlin Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.