Species · BCR 12 · BBS 2025 Release · 1966–2024
Northern Waterthrush In Boreal Hardwood Transition
Northern Waterthrush in Boreal Hardwood Transition has increased: up 34% on the route-weighted index since 1968.
+34%Since 1968
103Routes In Region
58Years
Notable Signals
No notable trend signals for Northern Waterthrush in Boreal Hardwood Transition. See the full index history below.
Forecast
If the recent trend holds, Northern Waterthrush in Boreal Hardwood Transition is projected to fall about 18% by 2029 — from 0.81 in 2024 to a central estimate of 0.67 (95% range 0.31–1.0). A 5-year backtest shows a typical error of ±32.3%, with 60% of held-out values landing inside the 95% band.
-18%Change by 2029
0.67Projected 2029 index
0.31–1.095% range
±32.3%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.66 | 0.29 | 1.0 |
| 2026 | 0.66 | 0.30 | 1.0 |
| 2027 | 0.66 | 0.30 | 1.0 |
| 2028 | 0.67 | 0.30 | 1.0 |
| 2029 | 0.67 | 0.31 | 1.0 |
Routes In Boreal Hardwood Transition
| Marenisco | MICHIGAN | 11 | 2019 |
| Sawbill Camp | MINNESOTA | 10 | 2024 |
| Brush Creek | MICHIGAN | 8 | 2012 |
| Waskish | MINNESOTA | 8 | 2024 |
| Hubbard Lake | MICHIGAN | 7 | 1996 |
| Sherry Lake | MINNESOTA | 7 | 2022 |
| Floodwood | MINNESOTA | 5 | 2024 |
| Isabella | MICHIGAN | 4 | 2004 |
| Cavour | WISCONSIN | 4 | 2023 |
| Gilchrist | MICHIGAN | 3 | 2021 |
| Walloon Lake 2 | MICHIGAN | 3 | 2024 |
| Ensign | MICHIGAN | 3 | 2008 |
| Wigwam Bay | MINNESOTA | 3 | 2023 |
| Hovland | MINNESOTA | 3 | 1992 |
| Babbitt | MINNESOTA | 3 | 2014 |
| Bigfork | MINNESOTA | 3 | 2023 |
| Blackduck | MINNESOTA | 3 | 2022 |
| Glendale | MINNESOTA | 3 | 2024 |
| Red Lake | MINNESOTA | 3 | 2023 |
| Chaffey | WISCONSIN | 3 | 2013 |
| Montreal | WISCONSIN | 3 | 2024 |
| Wausaukee | WISCONSIN | 3 | 2023 |
| Flambeau | WISCONSIN | 3 | 2024 |
| Bergland | MICHIGAN | 2 | 2019 |
| Bootjack | MICHIGAN | 2 | 1970 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.