Species · BCR 23 · BBS 2025 Release · 1966–2024
Canada Warbler In Prairie Hardwood Transition
Canada Warbler in Prairie Hardwood Transition has fallen sharply: down 65% on the route-weighted index since 1972.
-65%Since 1972
30Routes In Region
34Years
Notable Signals
No notable trend signals for Canada Warbler in Prairie Hardwood Transition. See the full index history below.
Forecast
If the recent trend holds, Canada Warbler in Prairie Hardwood Transition is projected to stay roughly flat through 2028, near 0.00 (95% range 0.00–0.03). A 5-year backtest shows a typical error of ±36.6%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2028
0.00Projected 2028 index
0.00–0.0395% range
±36.6%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2024 | 0.01 | 0.00 | 0.04 |
| 2025 | 0.01 | 0.00 | 0.03 |
| 2026 | 0.01 | 0.00 | 0.03 |
| 2027 | 0.00 | 0.00 | 0.03 |
| 2028 | 0.00 | 0.00 | 0.03 |
Routes In Prairie Hardwood Transition
| Gresham | WISCONSIN | 2 | 2004 |
| Grimms | WISCONSIN | 2 | 2010 |
| Indiana Dune | INDIANA | 1 | 1993 |
| Scottville | MICHIGAN | 1 | 1983 |
| Big Blue Lk | MICHIGAN | 1 | 1995 |
| Bravo | MICHIGAN | 1 | 2006 |
| Monterey | MICHIGAN | 1 | 1990 |
| Mottville | MICHIGAN | 1 | 1991 |
| No Bradley | MICHIGAN | 1 | 1970 |
| Hungerford | MICHIGAN | 1 | 2014 |
| New Buffalo | MICHIGAN | 1 | 1994 |
| Allegan Wma | MICHIGAN | 1 | 2001 |
| Almena | MICHIGAN | 1 | 2013 |
| Barry S.G.A. | MICHIGAN | 1 | 1995 |
| St Stephen | MINNESOTA | 1 | 1991 |
| Loraine | WISCONSIN | 1 | 1994 |
| Cumberland | WISCONSIN | 1 | 1993 |
| Holway | WISCONSIN | 1 | 1970 |
| Merrill | WISCONSIN | 1 | 1998 |
| Hatfield | WISCONSIN | 1 | 1971 |
| Stratford | WISCONSIN | 1 | 1997 |
| Stevens Pt | WISCONSIN | 1 | 1999 |
| Manawa | WISCONSIN | 1 | 2022 |
| Oconto Falls | WISCONSIN | 1 | 2012 |
| Casco | WISCONSIN | 1 | 2023 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.