Species · BCR 11 · BBS 2025 Release · 1966–2024
Least Bittern In Prairie Potholes
Least Bittern in Prairie Potholes has surged: up 135% on the route-weighted index since 2004.
+135%Since 2004
18Routes In Region
18Years
Notable Signals
No notable trend signals for Least Bittern in Prairie Potholes. See the full index history below.
Forecast
If the recent trend holds, Least Bittern in Prairie Potholes is projected to stay roughly flat through 2029, near 0.03 (95% range 0.00–0.06). A 5-year backtest shows a typical error of ±57.8%, with 80% of held-out values landing inside the 95% band.
n/aChange by 2029
0.03Projected 2029 index
0.00–0.0695% range
±57.8%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.03 | 0.00 | 0.06 |
| 2026 | 0.03 | 0.00 | 0.06 |
| 2027 | 0.03 | 0.00 | 0.06 |
| 2028 | 0.03 | 0.00 | 0.06 |
| 2029 | 0.03 | 0.00 | 0.06 |
Routes In Prairie Potholes
| Fairmont | MINNESOTA | 3 | 2022 |
| Big Stone | MINNESOTA | 2 | 2009 |
| Scranton | IOWA | 1 | 2018 |
| Courtland | MINNESOTA | 1 | 2016 |
| Dawson | MINNESOTA | 1 | 2004 |
| Appleton | MINNESOTA | 1 | 1982 |
| Forman | NORTH-DAKOTA | 1 | 2006 |
| Edgeley | NORTH-DAKOTA | 1 | 2023 |
| Lake George | NORTH-DAKOTA | 1 | 2010 |
| Cooperstown | NORTH-DAKOTA | 1 | 2006 |
| Wimbledon | NORTH-DAKOTA | 1 | 2015 |
| Horsehead Lk | NORTH-DAKOTA | 1 | 2019 |
| Buchanan | NORTH-DAKOTA | 1 | 2022 |
| Denbigh | NORTH-DAKOTA | 1 | 2023 |
| Montpelier | NORTH-DAKOTA | 1 | 2024 |
| Tripp | SOUTH-DAKOTA | 1 | 1986 |
| Wilmot | SOUTH-DAKOTA | 1 | 2008 |
| Veblen | SOUTH-DAKOTA | 1 | 2022 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.