Species · Washington · BBS 2025 Release · 1966–2024
Ring-necked Duck Population Trend in Washington
Ring-necked Duck in Washington has collapsed: down 83% on the route-weighted index since 1980.
-83%Since 1980
22Routes In State
43Years
Notable Ring-necked Duck Trends in Washington
long arc declinecomputed index
Ring-necked Duck has collapsed in Washington: down 83% on the route-weighted index since 1980.
Ring-necked Duck Population Forecast in Washington
If the recent trend holds, Ring-necked Duck in Washington is projected to rise about 70% by 2029 — from 0.16 in 2024 to a central estimate of 0.27 (95% range 0.00–0.98). A 5-year backtest shows a typical error of ±273.8%, with 100% of held-out values landing inside the 95% band.
+70%Change by 2029
0.27Projected 2029 index
0.00–0.9895% range
±273.8%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.28 | 0.00 | 0.99 |
| 2026 | 0.28 | 0.00 | 0.99 |
| 2027 | 0.27 | 0.00 | 0.99 |
| 2028 | 0.27 | 0.00 | 0.98 |
| 2029 | 0.27 | 0.00 | 0.98 |
Ring-necked Duck Survey Routes in Washington
| Tonasket | 12 | 2017 | 1998 |
| Curlew | 5 | 1994 | 1994 |
| Laurier | 5 | 2018 | 2004 |
| L Pend O Nwr | 4 | 2017 | 1996 |
| Omak Creek | 4 | 2024 | 2007 |
| Cusick | 3 | 2011 | 1984 |
| Turnbull Nwr | 2 | 2018 | 2002 |
| Rimrock | 2 | 2024 | 1987 |
| Nighthawk | 2 | 2024 | 2012 |
| Malden | 2 | 2012 | 2007 |
| Potholes | 2 | 2016 | 2016 |
| Warm Beach | 1 | 2000 | 1986 |
| Twisp | 1 | 2024 | 2009 |
| Brewster | 1 | 2015 | 1979 |
| Chewelah | 1 | 1977 | 1977 |
| Mendota 2 | 1 | 1991 | 1991 |
| Reardan | 1 | 2011 | 2011 |
| Columbia Nwr | 1 | 2006 | 2006 |
| Wapato | 1 | 1994 | 1994 |
| Asotin | 1 | 2002 | 2002 |
| Twin Lakes | 1 | 1999 | 1985 |
| Carlton | 1 | 2007 | 1995 |
Ring-necked Duck Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.