Species · Iowa · BBS 2025 Release · 1966–2024
Cooper's Hawk Population Trend in Iowa
Cooper's Hawk in Iowa has surged: up 244% on the route-weighted index since 1995.
+244%Since 1995
23Routes In State
19Years
Notable Cooper's Hawk Trends in Iowa
long arc increasecomputed index
Cooper's Hawk has surged in Iowa: up 244% on the route-weighted index since 1995.
Cooper's Hawk Population Forecast in Iowa
If the recent trend holds, Cooper's Hawk in Iowa is projected to stay roughly flat through 2028, near 0.13 (95% range 0.04–0.21). A 5-year backtest shows a typical error of ±79.6%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2028
0.13Projected 2028 index
0.04–0.2195% range
±79.6%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2024 | 0.12 | 0.03 | 0.20 |
| 2025 | 0.12 | 0.03 | 0.21 |
| 2026 | 0.12 | 0.03 | 0.21 |
| 2027 | 0.12 | 0.03 | 0.21 |
| 2028 | 0.13 | 0.04 | 0.21 |
Cooper's Hawk Survey Routes in Iowa
| Hudson | 4 | 2013 | 2013 |
| Mt Hamill | 1 | 2008 | 2008 |
| Exline | 1 | 2022 | 2007 |
| Melrose | 1 | 2018 | 2016 |
| Bedford | 1 | 2014 | 2014 |
| College Spgs | 1 | 2004 | 2004 |
| Bryant | 1 | 2018 | 2018 |
| Red Rock | 1 | 2010 | 2010 |
| Panther | 1 | 2018 | 2018 |
| Wales | 1 | 2016 | 2015 |
| Maquoketa | 1 | 2014 | 1995 |
| Prairieburg | 1 | 2018 | 2018 |
| Dinsdale | 1 | 2012 | 2012 |
| Scranton | 1 | 2010 | 2010 |
| Pierson | 1 | 2017 | 2017 |
| Washta | 1 | 2014 | 1998 |
| Sioux City | 1 | 2023 | 2007 |
| Davis Corner | 1 | 2022 | 2022 |
| Titonka | 1 | 2016 | 1977 |
| Rock Valley | 1 | 2015 | 2015 |
| College Spgs 2 | 1 | 2022 | 2009 |
| Lafayette | 1 | 2003 | 2003 |
| Mccallsburg | 1 | 2014 | 2014 |
Cooper's Hawk Population Trend in Other States
alabamaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.