Species · Ohio · BBS 2025 Release · 1966–2024
Purple Martin Population Trend in Ohio
Purple Martin in Ohio has declined: down 27% on the route-weighted index since 1968.
-27%Since 1968
80Routes In State
58Years
Notable Purple Martin Trends in Ohio
No notable trend signals for Purple Martin in Ohio. See the full index history below.
Purple Martin Population Forecast in Ohio
If the recent trend holds, Purple Martin in Ohio is projected to fall about 22% by 2029 — from 5.2 in 2024 to a central estimate of 4.0 (95% range 0.12–8.0). A 5-year backtest shows a typical error of ±45%, with 80% of held-out values landing inside the 95% band.
-22%Change by 2029
4.0Projected 2029 index
0.12–8.095% range
±45%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 4.1 | 0.18 | 8.0 |
| 2026 | 4.1 | 0.17 | 8.0 |
| 2027 | 4.1 | 0.15 | 8.0 |
| 2028 | 4.1 | 0.14 | 8.0 |
| 2029 | 4.0 | 0.12 | 8.0 |
Purple Martin Survey Routes in Ohio
| Dresden | 63 | 2024 | 1966 |
| Ash Ridge | 30 | 2021 | 1992 |
| Graytown | 24 | 1984 | 1966 |
| Fulton | 24 | 2024 | 1966 |
| Wilgus | 20 | 2009 | 1996 |
| Napoleon | 16 | 2024 | 1966 |
| Bloomville | 16 | 2024 | 1992 |
| Keene | 15 | 2023 | 1992 |
| New Dover | 13 | 2022 | 1966 |
| Lattasburg | 13 | 2024 | 1966 |
| Cumberland | 13 | 2017 | 1966 |
| Tar Hollow | 12 | 2024 | 2004 |
| Botkins | 11 | 2019 | 1992 |
| Kings Creek | 11 | 2015 | 2007 |
| Limestone | 11 | 2023 | 1986 |
| Birmingham | 11 | 2024 | 1988 |
| West Elkton | 10 | 2010 | 1992 |
| W Carrollton | 10 | 2015 | 1990 |
| Meadowbrook | 8 | 2003 | 1966 |
| Wilmington | 8 | 1996 | 1966 |
| Pittsfield | 7 | 2024 | 1992 |
| Coal Run | 6 | 1992 | 1966 |
| Kalida | 5 | 2019 | 1967 |
| Marion | 5 | 2023 | 1966 |
| Harveysburg | 5 | 1993 | 1966 |
Purple Martin Population Trend in Other States
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Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.