Species · Washington · BBS 2025 Release · 1966–2024
Eared Grebe Population Trend in Washington
Eared Grebe in Washington has collapsed: down 87% on the route-weighted index since 1979.
-87%Since 1979
5Routes In State
28Years
Notable Eared Grebe Trends in Washington
long arc declinecomputed index
Eared Grebe has collapsed in Washington: down 87% on the route-weighted index since 1979.
Eared Grebe Population Forecast in Washington
If the recent trend holds, Eared Grebe in Washington is projected to stay roughly flat through 2027, near 0.00 (95% range 0.00–0.95). A 5-year backtest shows a typical error of ±743%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2027
0.00Projected 2027 index
0.00–0.9595% range
±743%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2023 | 0.04 | 0.00 | 1.00 |
| 2024 | 0.03 | 0.00 | 0.98 |
| 2025 | 0.02 | 0.00 | 0.97 |
| 2026 | 0.01 | 0.00 | 0.96 |
| 2027 | 0.00 | 0.00 | 0.95 |
Eared Grebe Survey Routes in Washington
| Brewster | 3 | 2011 | 1977 |
| Moses Lake | 2 | 1979 | 1979 |
| Chewelah | 1 | 1981 | 1981 |
| Turnbull Nwr | 1 | 2006 | 1993 |
| Ellensburg | 1 | 2022 | 2022 |
Eared Grebe Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.