Species · Indiana · BBS 2025 Release · 1966–2024
Carolina Wren Population Trend in Indiana
Carolina Wren in Indiana has surged: up 85% on the route-weighted index since 1968.
+85%Since 1968
64Routes In State
58Years
Notable Carolina Wren Trends in Indiana
long arc increasecomputed index
Carolina Wren has surged in Indiana: up 85% on the route-weighted index since 1968.
Carolina Wren Population Forecast in Indiana
If the recent trend holds, Carolina Wren in Indiana is projected to fall about 35% by 2029 — from 8.4 in 2024 to a central estimate of 5.4 (95% range 2.3–8.5). A 5-year backtest shows a typical error of ±31.7%, with 80% of held-out values landing inside the 95% band.
-35%Change by 2029
5.4Projected 2029 index
2.3–8.595% range
±31.7%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 5.2 | 2.1 | 8.3 |
| 2026 | 5.2 | 2.1 | 8.3 |
| 2027 | 5.3 | 2.2 | 8.4 |
| 2028 | 5.3 | 2.3 | 8.4 |
| 2029 | 5.4 | 2.3 | 8.5 |
Carolina Wren Survey Routes in Indiana
| Celestine | 31 | 2024 | 1981 |
| Scottsburg | 31 | 2024 | 1982 |
| Georgia | 26 | 2024 | 1999 |
| Indian Spgs | 24 | 2024 | 1986 |
| Friendswood | 23 | 2024 | 1988 |
| Belmont | 21 | 2024 | 1983 |
| Clear Spring | 19 | 2024 | 1981 |
| Washington | 18 | 2024 | 1987 |
| New Phila | 18 | 2024 | 1982 |
| Evansville | 17 | 2022 | 1966 |
| Pimento | 15 | 2024 | 1984 |
| Azalia | 15 | 2024 | 1982 |
| Corydon | 15 | 2024 | 1966 |
| Newberry | 15 | 2024 | 2000 |
| Cyprss | 15 | 2024 | 1999 |
| Brookville | 14 | 2024 | 1966 |
| Wallace | 14 | 2024 | 2000 |
| Spencer | 12 | 2024 | 1967 |
| Monticello | 11 | 2024 | 1988 |
| Vevay | 11 | 2024 | 1966 |
| Witts Station | 11 | 2024 | 2000 |
| Brazil | 9 | 2024 | 1966 |
| Millersburg | 9 | 2024 | 1981 |
| Middletown | 8 | 2024 | 1966 |
| Lakeville | 8 | 2024 | 2024 |
Carolina Wren Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.