Species · BCR 10 · BBS 2025 Release · 1966–2024
Red-necked Grebe In Northern Rockies
Red-necked Grebe in Northern Rockies has collapsed: down 86% on the route-weighted index since 1971.
-86%Since 1971
17Routes In Region
53Years
Notable Signals
long arc declinecomputed index
Red-necked Grebe has collapsed in Northern Rockies: down 86% on the route-weighted index since 1971.
Forecast
If the recent trend holds, Red-necked Grebe in Northern Rockies is projected to stay roughly flat through 2029, near 0.00 (95% range 0.00–0.11). A 5-year backtest shows a typical error of ±59.8%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2029
0.00Projected 2029 index
0.00–0.1195% range
±59.8%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.01 | 0.00 | 0.11 |
| 2026 | 0.00 | 0.00 | 0.11 |
| 2027 | 0.00 | 0.00 | 0.11 |
| 2028 | 0.00 | 0.00 | 0.11 |
| 2029 | 0.00 | 0.00 | 0.11 |
Routes In Northern Rockies
| Sullivan Lk | WASHINGTON | 3 | 1999 |
| Naples | IDAHO | 2 | 2006 |
| Augusta | MONTANA | 2 | 1997 |
| Noxon | MONTANA | 2 | 2002 |
| Inside Road | MONTANA | 2 | 2024 |
| Mivoden | IDAHO | 1 | 2011 |
| Kalispell | MONTANA | 1 | 2024 |
| St Mary | MONTANA | 1 | 2005 |
| Arlee | MONTANA | 1 | 2011 |
| St. Mary 2 | MONTANA | 1 | 2024 |
| Twin Lakes | WASHINGTON | 1 | 2009 |
| Cusick | WASHINGTON | 1 | 2008 |
| Curlew | WASHINGTON | 1 | 1994 |
| Sullivan Lake 2 | WASHINGTON | 1 | 2008 |
| L Pend O Nwr | WASHINGTON | 1 | 2001 |
| Fontenelle | WYOMING | 1 | 1991 |
| Hunter Peak | WYOMING | 1 | 1995 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.