Species · BCR 23 · BBS 2025 Release · 1966–2024
Ruddy Duck In Prairie Hardwood Transition
Ruddy Duck in Prairie Hardwood Transition has declined: down 42% on the route-weighted index since 1969.
-42%Since 1969
14Routes In Region
22Years
Notable Signals
No notable trend signals for Ruddy Duck in Prairie Hardwood Transition. See the full index history below.
Forecast
If the recent trend holds, Ruddy Duck in Prairie Hardwood Transition is projected to stay roughly flat through 2018, near 0.02 (95% range 0.00–0.06). A 5-year backtest shows a typical error of ±63.1%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2018
0.02Projected 2018 index
0.00–0.0695% range
±63.1%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2014 | 0.02 | 0.00 | 0.06 |
| 2015 | 0.02 | 0.00 | 0.06 |
| 2016 | 0.02 | 0.00 | 0.06 |
| 2017 | 0.02 | 0.00 | 0.06 |
| 2018 | 0.02 | 0.00 | 0.06 |
Routes In Prairie Hardwood Transition
| Princeton | MINNESOTA | 5 | 2013 |
| Minnetonka | MINNESOTA | 4 | 2002 |
| Galesburg | MICHIGAN | 3 | 1969 |
| Glenwood | MINNESOTA | 3 | 2005 |
| Osseo | MINNESOTA | 2 | 1967 |
| Knapp | MINNESOTA | 2 | 2004 |
| Le Center | MINNESOTA | 2 | 1999 |
| Bismark | OHIO | 2 | 1972 |
| Weyerhauser | WISCONSIN | 2 | 2011 |
| Fall River | WISCONSIN | 2 | 1973 |
| Ellis | INDIANA | 1 | 2008 |
| Sherburne Nr | MINNESOTA | 1 | 1991 |
| Hudson | WISCONSIN | 1 | 2010 |
| Wiota | WISCONSIN | 1 | 2008 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.