Species · Michigan · BBS 2025 Release · 1966–2024
Northern Rough-winged Swallow Population Trend in Michigan
Northern Rough-winged Swallow in Michigan has edged up: up 19% on the route-weighted index since 1968.
+19%Since 1968
87Routes In State
58Years
Notable Northern Rough-winged Swallow Trends in Michigan
No notable trend signals for Northern Rough-winged Swallow in Michigan. See the full index history below.
Northern Rough-winged Swallow Population Forecast in Michigan
If the recent trend holds, Northern Rough-winged Swallow in Michigan is projected to rise about 251% by 2029 — from 0.26 in 2024 to a central estimate of 0.89 (95% range 0.20–1.6). A 5-year backtest shows a typical error of ±145.9%, with 60% of held-out values landing inside the 95% band.
+251%Change by 2029
0.89Projected 2029 index
0.20–1.695% range
±145.9%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.89 | 0.20 | 1.6 |
| 2026 | 0.89 | 0.20 | 1.6 |
| 2027 | 0.89 | 0.20 | 1.6 |
| 2028 | 0.89 | 0.20 | 1.6 |
| 2029 | 0.89 | 0.20 | 1.6 |
Northern Rough-winged Swallow Survey Routes in Michigan
| Hamburg 2 | 20 | 2023 | 2004 |
| Crystal Fls | 9 | 2022 | 1982 |
| Walloon Lake 2 | 9 | 2007 | 2006 |
| Hamtramck | 7 | 1984 | 1984 |
| Adair | 7 | 1995 | 1974 |
| Maple Grove | 6 | 1996 | 1990 |
| Prattville | 6 | 2018 | 1968 |
| Deckerville | 6 | 2016 | 1979 |
| Hamburg | 6 | 2001 | 1984 |
| Fowlerville | 5 | 2005 | 1975 |
| Brocky Lake | 4 | 2008 | 1981 |
| Belding | 4 | 2001 | 1991 |
| Cathro | 4 | 1995 | 1976 |
| Juniata | 4 | 2023 | 1966 |
| S Lyons | 4 | 1992 | 1983 |
| Bell Oak 2 | 4 | 2023 | 2021 |
| Bear Lake | 3 | 2008 | 1969 |
| New Troy | 3 | 2024 | 1972 |
| Irons | 3 | 1985 | 1973 |
| Skegemog Pt | 3 | 2011 | 1989 |
| Bell Oak | 3 | 2005 | 1969 |
| Holt | 3 | 2000 | 1969 |
| Adrian | 3 | 2016 | 2004 |
| Hubbard Lake | 3 | 1986 | 1974 |
| Tyre | 3 | 1968 | 1968 |
Northern Rough-winged Swallow Population Trend in Other States
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Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.