Species · BCR 11 · BBS 2025 Release · 1966–2024
Green Heron In Prairie Potholes
Green Heron in Prairie Potholes has declined: down 38% on the route-weighted index since 1971.
-38%Since 1971
36Routes In Region
47Years
Notable Signals
No notable trend signals for Green Heron in Prairie Potholes. See the full index history below.
Forecast
If the recent trend holds, Green Heron in Prairie Potholes is projected to stay roughly flat through 2029, near 0.03 (95% range 0.00–0.09). A 5-year backtest shows a typical error of ±83.6%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2029
0.03Projected 2029 index
0.00–0.0995% range
±83.6%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.03 | 0.00 | 0.09 |
| 2026 | 0.03 | 0.00 | 0.09 |
| 2027 | 0.03 | 0.00 | 0.09 |
| 2028 | 0.03 | 0.00 | 0.09 |
| 2029 | 0.03 | 0.00 | 0.09 |
Routes In Prairie Potholes
| Big Stone | MINNESOTA | 4 | 2011 |
| Chokio | MINNESOTA | 3 | 2005 |
| Washington | IOWA | 2 | 1993 |
| Garner | IOWA | 2 | 1992 |
| Courtland | MINNESOTA | 2 | 2023 |
| Redwood Fall | MINNESOTA | 2 | 1980 |
| Tenney | MINNESOTA | 2 | 1996 |
| Lake Bronson | MINNESOTA | 2 | 1979 |
| Franklin | MINNESOTA | 2 | 2021 |
| Emerado | NORTH-DAKOTA | 2 | 2007 |
| Lennox | SOUTH-DAKOTA | 2 | 2012 |
| Wilmot | SOUTH-DAKOTA | 2 | 2007 |
| Conde | SOUTH-DAKOTA | 2 | 1984 |
| Panther | IOWA | 1 | 1999 |
| Kanawha | IOWA | 1 | 1989 |
| Zearing | IOWA | 1 | 1994 |
| Scranton | IOWA | 1 | 1983 |
| Clare | IOWA | 1 | 1976 |
| Titonka | IOWA | 1 | 1975 |
| Hartland | MINNESOTA | 1 | 2012 |
| Huntley | MINNESOTA | 1 | 2017 |
| Chandler | MINNESOTA | 1 | 2023 |
| Arlington | MINNESOTA | 1 | 2004 |
| Maynard | MINNESOTA | 1 | 2015 |
| Dawson | MINNESOTA | 1 | 1981 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.