Species · BCR 17 · BBS 2025 Release · 1966–2024
Eared Grebe In Badlands and Prairies
Eared Grebe in Badlands and Prairies has surged: up 135% on the route-weighted index since 1971.
+135%Since 1971
35Routes In Region
51Years
Notable Signals
long arc increasecomputed index
Eared Grebe has surged in Badlands and Prairies: up 135% on the route-weighted index since 1971.
Forecast
If the recent trend holds, Eared Grebe in Badlands and Prairies is projected to fall about 27% by 2029 — from 1.1 in 2024 to a central estimate of 0.81 (95% range 0.00–2.3). A 5-year backtest shows a typical error of ±48.3%, with 80% of held-out values landing inside the 95% band.
-27%Change by 2029
0.81Projected 2029 index
0.00–2.395% range
±48.3%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.79 | 0.00 | 2.3 |
| 2026 | 0.80 | 0.00 | 2.3 |
| 2027 | 0.80 | 0.00 | 2.3 |
| 2028 | 0.81 | 0.00 | 2.3 |
| 2029 | 0.81 | 0.00 | 2.3 |
Routes In Badlands and Prairies
| Cottonwood | SOUTH-DAKOTA | 27 | 2024 |
| Two Dot | MONTANA | 19 | 2024 |
| Highwood | MONTANA | 18 | 2013 |
| Wheat Basin | MONTANA | 14 | 2024 |
| S. Pioneer | SOUTH-DAKOTA | 14 | 2024 |
| Savage | MONTANA | 8 | 1987 |
| Ingomar | MONTANA | 3 | 2023 |
| Dinosaurs H.M. | MONTANA | 3 | 2021 |
| Harding | SOUTH-DAKOTA | 3 | 1986 |
| Welch | WYOMING | 3 | 1995 |
| Roy | MONTANA | 2 | 2008 |
| Brusett | MONTANA | 2 | 1989 |
| Shawmut | MONTANA | 2 | 2024 |
| Dunn Center | NORTH-DAKOTA | 2 | 1997 |
| Bowman | NORTH-DAKOTA | 2 | 2018 |
| Bentley | NORTH-DAKOTA | 2 | 2013 |
| Ardmore | SOUTH-DAKOTA | 2 | 1994 |
| Pioneer | SOUTH-DAKOTA | 2 | 1993 |
| Kaycee | WYOMING | 2 | 2024 |
| Seely 2 | WYOMING | 2 | 2007 |
| Bucknum | WYOMING | 2 | 2001 |
| Jordan | MONTANA | 1 | 2017 |
| Circle | MONTANA | 1 | 1993 |
| Flatwillow | MONTANA | 1 | 1978 |
| Powderville | MONTANA | 1 | 1997 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.