Species · BCR 11 · BBS 2025 Release · 1966–2024
Black-headed Grosbeak In Prairie Potholes
Black-headed Grosbeak in Prairie Potholes has increased: up 30% on the route-weighted index since 1980.
+30%Since 1980
14Routes In Region
43Years
Notable Signals
No notable trend signals for Black-headed Grosbeak in Prairie Potholes. See the full index history below.
Forecast
If the recent trend holds, Black-headed Grosbeak in Prairie Potholes is projected to stay roughly flat through 2029, near 0.04 (95% range 0.00–0.08). A 5-year backtest shows a typical error of ±18%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2029
0.04Projected 2029 index
0.00–0.0895% range
±18%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.04 | 0.00 | 0.08 |
| 2026 | 0.04 | 0.00 | 0.08 |
| 2027 | 0.04 | 0.00 | 0.08 |
| 2028 | 0.04 | 0.00 | 0.08 |
| 2029 | 0.04 | 0.00 | 0.08 |
Routes In Prairie Potholes
| Douglas Crk | NORTH-DAKOTA | 3 | 2024 |
| Glasgow | MONTANA | 2 | 2009 |
| Hay Lake | MONTANA | 1 | 1988 |
| Cleveland | MONTANA | 1 | 2010 |
| Saco | MONTANA | 1 | 2021 |
| Lambert | MONTANA | 1 | 2021 |
| Regan | NORTH-DAKOTA | 1 | 2018 |
| Carpio | NORTH-DAKOTA | 1 | 1993 |
| Stanley | NORTH-DAKOTA | 1 | 2023 |
| Powers Lake | NORTH-DAKOTA | 1 | 1980 |
| Parshall | NORTH-DAKOTA | 1 | 2006 |
| Braddock | NORTH-DAKOTA | 1 | 2014 |
| Geddes | SOUTH-DAKOTA | 1 | 1967 |
| Gorman | SOUTH-DAKOTA | 1 | 2000 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.