Species · BCR 17 · BBS 2025 Release · 1966–2024
American Bittern In Badlands and Prairies
American Bittern in Badlands and Prairies has risen sharply: up 66% on the route-weighted index since 1970.
+66%Since 1970
36Routes In Region
50Years
Notable Signals
long arc increasecomputed index
American Bittern has risen sharply in Badlands and Prairies: up 66% on the route-weighted index since 1970.
Forecast
If the recent trend holds, American Bittern in Badlands and Prairies is projected to stay roughly flat through 2029, near 0.10 (95% range 0.00–0.23). A 5-year backtest shows a typical error of ±52.9%, with 60% of held-out values landing inside the 95% band.
n/aChange by 2029
0.10Projected 2029 index
0.00–0.2395% range
±52.9%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.10 | 0.00 | 0.23 |
| 2026 | 0.10 | 0.00 | 0.23 |
| 2027 | 0.10 | 0.00 | 0.23 |
| 2028 | 0.10 | 0.00 | 0.23 |
| 2029 | 0.10 | 0.00 | 0.23 |
Routes In Badlands and Prairies
| Lacreek | SOUTH-DAKOTA | 9 | 2023 |
| Hayes | SOUTH-DAKOTA | 7 | 2019 |
| Webster | MONTANA | 3 | 2023 |
| Bowman | NORTH-DAKOTA | 3 | 2023 |
| Ottumwa | SOUTH-DAKOTA | 3 | 2015 |
| Lark | NORTH-DAKOTA | 2 | 1982 |
| Gorham | NORTH-DAKOTA | 2 | 2007 |
| S. Pioneer | SOUTH-DAKOTA | 2 | 2024 |
| Roy | MONTANA | 1 | 2019 |
| Brusett | MONTANA | 1 | 1982 |
| Ingomar | MONTANA | 1 | 1980 |
| St Xavier | MONTANA | 1 | 1996 |
| Powderville | MONTANA | 1 | 1974 |
| Albion | MONTANA | 1 | 2008 |
| Flatwillow 2 | MONTANA | 1 | 2018 |
| Winnett | MONTANA | 1 | 2023 |
| Lindsay | MONTANA | 1 | 2018 |
| Ft Yates | NORTH-DAKOTA | 1 | 1999 |
| Dickinson | NORTH-DAKOTA | 1 | 2013 |
| Dunn Center | NORTH-DAKOTA | 1 | 2023 |
| Tobacco | NORTH-DAKOTA | 1 | 2007 |
| Cedar Creek | NORTH-DAKOTA | 1 | 2015 |
| Golva | NORTH-DAKOTA | 1 | 2003 |
| Bentley | NORTH-DAKOTA | 1 | 1988 |
| Glen Ullin | NORTH-DAKOTA | 1 | 2019 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.