Species · Michigan · BBS 2025 Release · 1966–2024
Sora Population Trend in Michigan
Sora in Michigan has collapsed: down 83% on the route-weighted index since 1970.
-83%Since 1970
43Routes In State
47Years
Notable Sora Trends in Michigan
long arc declinecomputed index
Sora has collapsed in Michigan: down 83% on the route-weighted index since 1970.
Sora Population Forecast in Michigan
If the recent trend holds, Sora in Michigan is projected to stay roughly flat through 2027, near 0.02 (95% range 0.00–0.09). A 5-year backtest shows a typical error of ±28.8%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2027
0.02Projected 2027 index
0.00–0.0995% range
±28.8%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2023 | 0.03 | 0.00 | 0.09 |
| 2024 | 0.03 | 0.00 | 0.09 |
| 2025 | 0.03 | 0.00 | 0.09 |
| 2026 | 0.03 | 0.00 | 0.09 |
| 2027 | 0.02 | 0.00 | 0.09 |
Sora Survey Routes in Michigan
| Creighton | 2 | 1993 | 1993 |
| Cathro | 2 | 2013 | 2012 |
| Bergland | 1 | 1982 | 1982 |
| Marenisco | 1 | 2016 | 1981 |
| Bootjack | 1 | 2007 | 2007 |
| Hungerford | 1 | 2013 | 2013 |
| Chippewa Lk. | 1 | 2009 | 1996 |
| Maple Grove | 1 | 2017 | 1997 |
| Seney Nwr | 1 | 2019 | 1992 |
| Brocky Lake | 1 | 2017 | 2017 |
| Wilson | 1 | 1987 | 1975 |
| Cunard | 1 | 2018 | 2018 |
| Shingleton | 1 | 2022 | 1967 |
| Barry S.G.A. | 1 | 2006 | 2006 |
| Bear Lake | 1 | 2011 | 1980 |
| Scottville | 1 | 1974 | 1970 |
| Big Blue Lk | 1 | 2015 | 2015 |
| Scott'S Marsh | 1 | 2008 | 2008 |
| Barry S.G.A. 2 | 1 | 2017 | 2017 |
| Tahquamenon | 1 | 2013 | 2013 |
| Skegemog Pt | 1 | 1986 | 1986 |
| Big Rapids | 1 | 1986 | 1986 |
| Nashville | 1 | 2015 | 1970 |
| Coopersville | 1 | 2021 | 1985 |
| Belding | 1 | 1996 | 1983 |
Sora Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.