Species · Washington · BBS 2025 Release · 1966–2024
Ruddy Duck Population Trend in Washington
Ruddy Duck in Washington has fallen sharply: down 68% on the route-weighted index since 1981.
-68%Since 1981
22Routes In State
45Years
Notable Ruddy Duck Trends in Washington
long arc declinecomputed index
Ruddy Duck has fallen sharply in Washington: down 68% on the route-weighted index since 1981.
Ruddy Duck Population Forecast in Washington
If the recent trend holds, Ruddy Duck in Washington is projected to rise about 130% by 2029 — from 0.07 in 2024 to a central estimate of 0.16 (95% range 0.00–1.6). A 5-year backtest shows a typical error of ±940%, with 100% of held-out values landing inside the 95% band.
+130%Change by 2029
0.16Projected 2029 index
0.00–1.695% range
±940%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.22 | 0.00 | 1.6 |
| 2026 | 0.21 | 0.00 | 1.6 |
| 2027 | 0.19 | 0.00 | 1.6 |
| 2028 | 0.18 | 0.00 | 1.6 |
| 2029 | 0.16 | 0.00 | 1.6 |
Ruddy Duck Survey Routes in Washington
| Tonasket | 10 | 2017 | 1983 |
| Wilbur | 10 | 2005 | 1984 |
| Brewster | 6 | 2018 | 1980 |
| Keystone | 4 | 2012 | 2012 |
| Othello | 3 | 1991 | 1989 |
| Chewelah | 2 | 2016 | 1997 |
| L Pend O Nwr | 2 | 2024 | 1996 |
| Harrington | 2 | 2001 | 2001 |
| Reardan | 2 | 2014 | 1998 |
| Omak Creek | 2 | 2024 | 2007 |
| Laurier | 2 | 2017 | 2013 |
| Moses Coulee | 2 | 2023 | 2002 |
| Warm Beach | 1 | 1993 | 1993 |
| Turnbull Nwr | 1 | 2018 | 1993 |
| Moses Lake | 1 | 2022 | 1979 |
| Columbia Nwr | 1 | 2006 | 1992 |
| Wapato | 1 | 1995 | 1994 |
| Snowden | 1 | 1991 | 1991 |
| Twin Lakes | 1 | 1997 | 1988 |
| Ewan | 1 | 1999 | 1999 |
| Malden | 1 | 2007 | 2004 |
| Odessa | 1 | 2001 | 2001 |
Ruddy Duck Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.