Species · BCR 12 · BBS 2025 Release · 1966–2024
Blue Jay In Boreal Hardwood Transition
Blue Jay in Boreal Hardwood Transition has increased: up 25% on the route-weighted index since 1968.
+25%Since 1968
127Routes In Region
58Years
Notable Signals
No notable trend signals for Blue Jay in Boreal Hardwood Transition. See the full index history below.
Forecast
If the recent trend holds, Blue Jay in Boreal Hardwood Transition is projected to stay roughly flat through 2029, near 14 (95% range 11–17). A 5-year backtest shows a typical error of ±6.4%, with 100% of held-out values landing inside the 95% band.
+2%Change by 2029
14Projected 2029 index
11–1795% range
±6.4%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 14 | 11 | 17 |
| 2026 | 14 | 11 | 17 |
| 2027 | 14 | 11 | 17 |
| 2028 | 14 | 11 | 17 |
| 2029 | 14 | 11 | 17 |
Routes In Boreal Hardwood Transition
| Washington I | WISCONSIN | 40 | 2024 |
| Red Oak | MICHIGAN | 33 | 2022 |
| Brush Creek | MICHIGAN | 32 | 2016 |
| Chisholm | MINNESOTA | 32 | 2024 |
| Union Twp | WISCONSIN | 32 | 2024 |
| Cunard | MICHIGAN | 31 | 2021 |
| Cluster Lakes | MICHIGAN | 29 | 2010 |
| Frederic 2 | MICHIGAN | 26 | 2017 |
| Iron River | WISCONSIN | 26 | 2024 |
| Big Island Lake | MICHIGAN | 24 | 2010 |
| Gooseneck | MICHIGAN | 24 | 2010 |
| Hart Lake | MINNESOTA | 24 | 2024 |
| Sherry Lake | MINNESOTA | 24 | 2022 |
| Amberg | WISCONSIN | 24 | 2024 |
| Ishpeming | MICHIGAN | 23 | 2023 |
| Herron | MICHIGAN | 23 | 2016 |
| Glendale | MINNESOTA | 23 | 2024 |
| Harrietta | MICHIGAN | 22 | 2024 |
| Walloon Lake 2 | MICHIGAN | 22 | 2024 |
| Grand View | WISCONSIN | 22 | 2024 |
| Popple River | WISCONSIN | 22 | 2024 |
| Wausaukee | WISCONSIN | 22 | 2024 |
| Amnicon Falls | WISCONSIN | 22 | 2024 |
| Frederic | MICHIGAN | 21 | 2003 |
| Blackduck | MINNESOTA | 21 | 2022 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.