Species · BCR 24 · BBS 2025 Release · 1966–2024
Carolina Wren In Central Hardwoods
Carolina Wren in Central Hardwoods has surged: up 87% on the route-weighted index since 1968.
+87%Since 1968
166Routes In Region
58Years
Notable Signals
long arc increasecomputed index
Carolina Wren has surged in Central Hardwoods: up 87% on the route-weighted index since 1968.
Forecast
If the recent trend holds, Carolina Wren in Central Hardwoods is projected to stay roughly flat through 2029, near 17 (95% range 11–24). A 5-year backtest shows a typical error of ±34.1%, with 80% of held-out values landing inside the 95% band.
+9%Change by 2029
17Projected 2029 index
11–2495% range
±34.1%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 17 | 10 | 23 |
| 2026 | 17 | 10 | 23 |
| 2027 | 17 | 10 | 23 |
| 2028 | 17 | 11 | 24 |
| 2029 | 17 | 11 | 24 |
Routes In Central Hardwoods
| Triana | ALABAMA | 48 | 2012 |
| Collinwood | TENNESSEE | 40 | 2024 |
| Valhermoso Spgs | ALABAMA | 39 | 2010 |
| Petersburg | TENNESSEE | 38 | 2019 |
| Cave In Rock | ILLINOIS | 37 | 2024 |
| Trace Lewis | TENNESSEE | 35 | 2017 |
| Courtland | ALABAMA | 33 | 2023 |
| Valhermoso Spg 2 | ALABAMA | 33 | 2014 |
| Campbellsville | TENNESSEE | 33 | 2019 |
| Wheeler Dam | ALABAMA | 32 | 2023 |
| Carter Grove | ALABAMA | 32 | 2023 |
| Osage Beach | MISSOURI | 32 | 2024 |
| Pulaski | ILLINOIS | 31 | 2024 |
| Celestine | INDIANA | 31 | 2024 |
| Scottsburg | INDIANA | 31 | 2024 |
| Bays Fork | KENTUCKY | 29 | 2019 |
| Rome | OHIO | 29 | 2024 |
| Swaim | ALABAMA | 28 | 2024 |
| Hustonville | KENTUCKY | 28 | 2024 |
| Bradyville | TENNESSEE | 28 | 2021 |
| Elkmont | ALABAMA | 27 | 2024 |
| Whitewater | MISSOURI | 27 | 2024 |
| Silver Pt | TENNESSEE | 27 | 2024 |
| Georgia | INDIANA | 26 | 2024 |
| White House | TENNESSEE | 26 | 2019 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.