Species · BCR 12 · BBS 2025 Release · 1966–2024
Northern House Wren In Boreal Hardwood Transition
Northern House Wren in Boreal Hardwood Transition has edged down: down 11% on the route-weighted index since 1968.
-11%Since 1968
116Routes In Region
58Years
Notable Signals
No notable trend signals for Northern House Wren in Boreal Hardwood Transition. See the full index history below.
Forecast
If the recent trend holds, Northern House Wren in Boreal Hardwood Transition is projected to fall about 38% by 2029 — from 4.1 in 2024 to a central estimate of 2.5 (95% range 1.2–3.8). A 5-year backtest shows a typical error of ±35.3%, with 40% of held-out values landing inside the 95% band.
-38%Change by 2029
2.5Projected 2029 index
1.2–3.895% range
±35.3%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 2.6 | 1.3 | 3.9 |
| 2026 | 2.6 | 1.3 | 3.9 |
| 2027 | 2.6 | 1.2 | 3.9 |
| 2028 | 2.5 | 1.2 | 3.9 |
| 2029 | 2.5 | 1.2 | 3.8 |
Routes In Boreal Hardwood Transition
| Greenbush | MINNESOTA | 28 | 2024 |
| Lude | MINNESOTA | 22 | 2023 |
| Washington I | WISCONSIN | 22 | 2024 |
| Wigwam Bay | MINNESOTA | 15 | 2023 |
| Lake City | MICHIGAN | 14 | 2022 |
| Brainerd | MINNESOTA | 14 | 2024 |
| Gilman | WISCONSIN | 14 | 2024 |
| Wausaukee | WISCONSIN | 14 | 2024 |
| Harrietta | MICHIGAN | 13 | 2024 |
| Debs | MINNESOTA | 13 | 2024 |
| Maple Grove | MICHIGAN | 11 | 2024 |
| Crystal Fls | MICHIGAN | 10 | 2024 |
| Bemidji | MINNESOTA | 10 | 1980 |
| Iron River | WISCONSIN | 10 | 2024 |
| Riggsville | MICHIGAN | 9 | 2019 |
| Wilson | MICHIGAN | 7 | 2010 |
| Sand Lake | MICHIGAN | 7 | 2024 |
| Pine River | MINNESOTA | 7 | 2024 |
| Bayfield | WISCONSIN | 7 | 2024 |
| Rib Lake | WISCONSIN | 7 | 2024 |
| Irma | WISCONSIN | 7 | 2024 |
| Amnicon Falls | WISCONSIN | 7 | 2024 |
| Ishpeming | MICHIGAN | 6 | 2023 |
| Cunard | MICHIGAN | 6 | 2021 |
| Bear Lake | MICHIGAN | 6 | 2024 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.