Species · Illinois · BBS 2025 Release · 1966–2024
Osprey Population Trend in Illinois
Osprey in Illinois has surged: up 316% on the route-weighted index since 2001.
+316%Since 2001
8Routes In State
13Years
Notable Osprey Trends in Illinois
long arc increasecomputed index
Osprey has surged in Illinois: up 316% on the route-weighted index since 2001.
Osprey Survey Routes in Illinois
| Beaucoup | 4 | 2024 | 2022 |
| New Lenox | 3 | 2019 | 2019 |
| Karnak | 2 | 2010 | 2009 |
| Cherry Val | 1 | 1997 | 1997 |
| Seneca | 1 | 2024 | 2024 |
| Wayne | 1 | 2024 | 2019 |
| Williamsfld | 1 | 2022 | 2022 |
| Beaverdam Lk | 1 | 2013 | 1988 |
Osprey Population Trend in Other States
alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoindianaiowakentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinaohiooregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.