Species · Michigan · BBS 2025 Release · 1966–2024
Great Horned Owl Population Trend in Michigan
Great Horned Owl in Michigan has fallen sharply: down 62% on the route-weighted index since 1973.
-62%Since 1973
42Routes In State
46Years
Notable Great Horned Owl Trends in Michigan
long arc declinecomputed index
Great Horned Owl has fallen sharply in Michigan: down 62% on the route-weighted index since 1973.
Great Horned Owl Population Forecast in Michigan
If the recent trend holds, Great Horned Owl in Michigan is projected to stay roughly flat through 2027, near 0.00 (95% range 0.00–0.06). A 5-year backtest shows a typical error of ±59.8%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2027
0.00Projected 2027 index
0.00–0.0695% range
±59.8%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2023 | 0.01 | 0.00 | 0.07 |
| 2024 | 0.01 | 0.00 | 0.07 |
| 2025 | 0.01 | 0.00 | 0.07 |
| 2026 | 0.00 | 0.00 | 0.07 |
| 2027 | 0.00 | 0.00 | 0.06 |
Great Horned Owl Survey Routes in Michigan
| St Charles | 5 | 1978 | 1978 |
| Bear Lake | 2 | 2004 | 2004 |
| Maple Rapids | 2 | 1988 | 1988 |
| Bootjack | 1 | 2006 | 2006 |
| Chippewa Lk. | 1 | 2011 | 2011 |
| Belding 2 | 1 | 2007 | 2007 |
| Gibbs City | 1 | 2002 | 2002 |
| Seney Nwr | 1 | 2011 | 2011 |
| Allegan Wma | 1 | 2016 | 1993 |
| Almena | 1 | 2008 | 1995 |
| Scottville | 1 | 2022 | 1976 |
| Big Blue Lk | 1 | 1990 | 1990 |
| Bravo | 1 | 1995 | 1995 |
| Tahquamenon | 1 | 1976 | 1976 |
| Gilchrist | 1 | 1991 | 1991 |
| Skegemog Pt | 1 | 2003 | 1994 |
| Nashville | 1 | 2000 | 1975 |
| Coopersville | 1 | 2010 | 1995 |
| Belding | 1 | 2002 | 1984 |
| Galesburg | 1 | 1998 | 1977 |
| Howardsville | 1 | 2022 | 2000 |
| Monterey | 1 | 1997 | 1986 |
| Remus | 1 | 1998 | 1998 |
| Raco | 1 | 2016 | 1993 |
| Pickford | 1 | 2013 | 1983 |
Great Horned Owl Population Trend in Other States
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Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.